Latest Pipes, Pumps And Valves Africa Nov-Dec 2021

ENDORSED BY SAPMA, SAPSDA, SAVAMA AND VAMCOSA

NOV/DEC 2021

Integrated Pump Technology continues growth trajectory

CONTENT COVER STORY Integrated Pump Technology continues growth trajectory

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BEARINGS Vesconite extra large bearings 6

ENDORSED BY SAPMA, SAPSDA, SAVAMA AND VAMCOSA

NOV/DEC 2021

WATER The growing problem of wastewater in oceans and coastal habitats 8

PUMPS Integrated Pump Rentals offers rentals and locally built pump sets

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Macsteel focuses on customer centricity by relocating

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Years after their introduction, Tsurumi Pump is seeing an increased demand for automatic moisture-sensing pumps Peristaltic hose pump technology in precious metal mining

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Pumped up to meet the demands of mining

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Saving operating costs with distributed pumping

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SMC launches abrasive resistant process pump

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Repair, replace, or retrofit? Reading the warning signs of an older large-volume water pump

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Verder Pumps partner with ProProcess on Anglo American project

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Optimizing equipment performance and reliability for the power gen-eration sector

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Reducing pumping system TCO: 3 valuable steps

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The PeriBest peristaltic pumps

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Motors, fans & pumps: 4 common causes of rotating asset failure and how to prevent them

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Pipes, Pumps & Valves Africa Lifting Africa Golf Day 2021

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When crazy things get caught in big water pumps

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ADVERTORIAL Hart slurry pumps, redefining simple dependable value Kira Valves & Engineering

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VALVES Dezurik hydraulic power units system solutions

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BUYERS GUIDE

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Integrated Pump Technology continues growth trajectory

On the cover

Integrated Pump Technology, +27 (0) 11 894 2906, info@pumptechnology.co.za, www.pump-technology.co.za

Pipes, Pumps & Valves Africa Managing Editor: Surita Marx Tel: +27 (0) 87 153-1217 Cell: +27 (0) 83 281-5761 Email: info@pumpsandvalves.co.za Web: www.pumpsandvalves.co.za Sales: Mark Bennett Email: sales@pumpsandvalves.co.za Production Manager: Xane Roestroff Email: adverts@pumpsandvalves.co.za Sub-Editor: Debbie van Rensburg

Advertisers

Africa Slurry Pump Solutions 13 Air & Vacuum Technologies 37 Corner Stone 14 Bilfinger

23 Bray 17 Busch Vacuum 21 Industrial Valve Summit IBC Integrated Pump Rental OBC Integrated Pump Technology OFC Invincible Valves 11 Kite 7 KSB 15 LVSA 29 Macsteel 35 Pipes, Pumps & Valves Africa 46 Steloy Foundries 9 Stewarts & Lloyds IFC Verder Pumps 31 Xylem 27

Disclaimer:

Opinions in this Publication are those of the authors and do not necessarily reflect those of this publication, its editorial board, its editor or its Publishers SAPMA or VAMCOSA The mention of specific products in articles and advertisements does not imply that they are endorsed or recommended by this Publication or its publishers in preference to others of a similar nature, which are not mentioned or advertised. Reliance on any information contained in this journal is at your own risk. While every effort is made to ensure the accuracy of editorial board makes no representations or warranties, express or implied, as to the correctness or suitability contained and/or the products advertised in this publication. The Publisher shall not be liable for any damages or loss, howsoever arising, incurred by readers of this publication or any other person/s. The Publisher disclaims all responsibility and liability for any damages, includes pure economic loss and any consequential damages, resulting from the use of services or products advertised in this publication. Readers of this publication indemnify and hold harmless the publisher, its officers, employees, and servants for any demand action, application or other proceedings made by any third party and arising out or in connection with the use of any services and/or products or the reliance on any information contained in this publication.

Pipes, Pumps and Valves Africa - Nov/Dec 2021

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COVER STORY

Integrated Pump Technology continues growth trajectory Integrated Pump Technology has grown from strength to strength since it was first established in 2014 as the sole importer and principal distributor for sub-Saharan Africa for the Grindex range of submersible pumps.

With continued investment in skilled people who understand the industry, the company’s growth trajectory is set to continue.

Operating from its head office close to OR Tambo International Airport in Gauteng, the company offers tailor-made solutions for both dry and submersible pumping applications.

With its strong network of strategically located distributors selected for their technical expertise and experience customers are assured of rapid local access to both sales and technical information.

The Integrated Pump Technology product line-up includes well respected international brands such as Grindex submersible pump, Faggiolati submersible drainage and wastewater pumps, mixers and aerators and Leybold vacuum pumps.

The company’s full-service offering has established its reputation for responsiveness to its customer base, and this includes comprehensive stockholding of all critical spares across the ranges.

Technical and engineering support is provided by the company’s skilled support team, and its fully equipped service centre manned by experienced personnel ensures that pump units are maintained to OEM standards.

The necessary equipment and expertise are on hand to look after the complete range of pumps, from the 0,4 kW units right up to the large 90 kW Grindex Bravo Mega pumps.

Continued investment in the facility and its capabilities means that customers can benefit from a six-month warranty on refurbishments and repairs.

Among the technical support services in the company’s quality accredited facility is its test tank. This allows comprehensive testing of pumps with motors up to 150 kW. Integrated Pump Technology, +27 (0) 11 894 2906, info@pumptechnology.co.za, www.pump-technology.co.za

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Pipes, Pumps and Valves Africa - Nov/Dec 2021 Pipes, Pumps and Valves Africa - Nov/Dec 2021

Pipes, Pumps and Valves Africa - Nov/Dec 2021

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Vesconite extra-large bearings Vesconite and Vesconite Hilube are ideal for high-load static and slow-moving applications. Our advanced grade. Ideal for under¬water and high-speed applications such as propeller shaft, pump and hydro turbine main shaft bearings.

BEARINGS

Our standard grade bearing material, suitable for numerous general applications.

Order from our range of stock sizes Vesconite Bearings stocks the world’s largest range of extra-large bearings. Stock sizes are available for immediate dispatch.

We create your custom size We can fully machine, extrude custom sizes and manufacture custom Superclad bearings. Sizes up to Ø1,500 mm and greater can be produced.

Superclad bearings • Built up to the required outside diameter with proprietary material.

• Cured overnight and ready for dispatch one or two days later.

• Get the low friction and long life of Vesconite and Vesconite Hilube against your shafts.

Versatile across industries marine Proved in the marine industry for over 40 years: • Rudder bearings

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

• Propeller shaft bearings • Floating production storage and offloading units (FPSOs) • Offshore buoy mooring systems • Winch roller bearings • Stern roller bearings • Davit & deck crane bearings • Cactus grabs and crane buckets • Hatch cover bearings Hydro Vesconite and Vesconite Hilube XL bushings used for: • Main shaft bearings • Wicket gate bearings • Link arm bushings • Clevis pin bushings • Change-ring wear guides • Pressure relief control valves • Supporting equipment around hydropower plants, including turbine pumps Industrial • Large diameter mills for mineral processing • Rubber masticating mills

• Attrition scrubbers for glass, mineral and cement industries • Articulating dump trucks • Double toggle jaw crushers • Sugar mills • Large diameter pump wear rings • Electrical insulation of large roller bearings

Vesconite and Vesconite Hilube operate in demanding environments, offering long operational life.

Ideal for remote locations where maintenance is practically impossible.

The advantages of vesconite and vesconite hilube easy on shafts Minimize wear and reduce vibration on shafts with constant low friction bearing material.

Clean technology Vesconite is internally and water lubricated - no more grease or oils, so no risk to marine wildlife and ecosystems. Ideal for renewable, marine, hydroelectric and other applications.

No swelling Vesconite bearing materials have negligible swelling and are ideal for submerged marine, hydroelectric, wave and tidal applications.

Uv resistant Vesconite bearing materials can be exposed to sunlight without cracking or disintegration.

BEARINGS

Renewable energy • Wind turbines • Tidal turbines • Wave turbines

constantly submerged makes the Vesconite range ideal for underwater bearings.

This makes them suitable for outdoor applica¬tions, including wind power generation.

No galvanic corrosion Make bimetallic corrosion a problem of the past. Vesconite bearings do not corrode and are easy to remove and fit.

No seizure Close running clearances can be applied without the risk of swell or seizure. Shaft vibrations are reduced.

International approvals Our bearing materials have

been approved by the main ship classifica¬tion societies.

A leading infrastructure equip¬ment supplier has also approved the worldwide use of our materials in its hydroelectric turbines.

Vesconite Bearings, +27 (0) 11 616 1111, vesconite@vesconite.com, www.vesconite.com

Long wear life Unaffected by seawater. Low friction and low wear contribute to exceptionally long life. This is important in the hydroelectric and renewable industries, which have long service intervals.

Wear resistant Withstands the severe environmental conditions encoun¬tered in marine, renewable and other industries.

No delamination Vesconite is a homogenous material meaning no delamination over time.

No stick-slip The static and dynamic coefficients of friction do not differ significant¬ly, so there is no sticking or squealing of the shaft on the bearing at start-up and low RPMs. This reduces noise and abrasive wear to bearings and shafts.

High load capacity High compression strength means no distortion under load, even when wet. The ability to keep its com¬pression strength while Pipes, Pumps and Valves Africa - Nov/Dec 2021

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The growing problem of wastewater in oceans and coastal habitats

WATER

Researchers at World Water Week 2021 discuss the link between ocean health and wastewater. When wastewater enters watersheds and coastal habitats, it can cause significant changes in ecosystems that harm the health and livelihoods of communities.

At World Water Week 2021, scientists shared their latest research, and organizations discussed how they are addressing the problem. Xylem’s Dr Lindsay Birt shared results from a pilot project at a wastewater treatment plant that showed digital solutions had the potential to reduce nitrogen in effluent by 30 percent.

The wide-ranging problems caused by wastewater in coastal habitats were discussed by Dr Stephanie Wear, Senior Scientist & Strategy Advisor at The Nature Conservancy. Her organization is part of the newly formed Ocean Sewage Alliance, made up of organizations and academic scientists focused on reducing the threat of sewage and other wastewater pollution in oceans.

"An estimated 80 percent of our global wastewater is discharged untreated into the environment," she said during her presentation. "The assumption has been, not surprisingly, that the ocean can handle it, that in fact the ocean can treat the wastewater. Let me be very clear that our oceans and our environment in general cannot handle it, and in fact have been very severely impacted by it."

Even when wastewater is treated, Wear says, ecosystems and communities are still affected by overflows caused by storms and through insufficient treatment of wastewater.

"Many cities have been designed to combine stormwater and sewer water, so that rain events don’t overwhelm treatment plants,” she said. “Ultimately this results in

the discharge of tens of trillions of gallons of sewage and stormwater into the ocean every year.” Wear presented an overview of some of the impacts and mechanisms that are leading to a decline in key coastal habitats and fisheries, which billions of people depend on for food.

"Recent science has shown us that coastal fish populations are extremely vulnerable to pollution," she said.

"Deformities are being found in the tissues of juvenile fish living near tertiary sewage treatment plants. They are actually getting contaminated from treated water."

Mapping wastewater discharge to oceans Dr Benjamin Halpern, Director of the UCSB National Center for Ecological Analysis and Synthesis (NCEAS) in Santa Barbara, shared the results of a recent study that created a model of how wastewater is discharged into oceans around the world. “Wastewater can come from multiple different sources,” he said during his presentation. “It can be treated sewage from wastewater systems, it can be in septic systems or tanks and pits, or it can be direct input into the system. Understanding these sources is really important for understanding the pathways to solving the problem and mitigating the input from wastewater nitrogen into coastal waters.”

Excess levels of nitrogen in groundwater can cause health problems when it is used for drinking, and in waterways, it can cause harmful algal blooms that impact recreation, tourism, human health and fisheries.

"The first highlight result is that wastewater nitrogen is about 40 percent of the amount being put into coastal waters from agriculture, livestock, and manure," he said.

"Agriculture nitrogen runoff gets lots of attention, but the problem of wastewater is on equal magnitude and is something we definitely need to be paying attention to."

The model created in the study, based on many different data inputs, found that about 37 percent of wastewater input globally is coming from septic and direct input, with 63 percent coming from sewer systems.

"In many countries, nearly 100% is coming from septic and direct systems," he said. "Thinking about solutions for these countries is going to be very different than those that are primarily on sewer systems."

Using digital twins to improve the health of Europe’s oceans Dr Lindsay Birt, Client Solutions Manager for Xylem's Decision Intelligence Solutions, presented how new

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

technology can help reduce nitrogen in effluent and decrease energy consumption at wastewater treatment plants. A pilot study conducted by Xylem, a global charitable foundation, and a coastal water utility in Northern Europe, used digital twins and predictive analytics to help optimize the utility’s wastewater collection and treatment. "A digital twin is a digital replica of a device or product that can be modeled to use in simulation or prediction of behavior,” she said during her presentation. “Digital twins can represent assets from the physical world and the digital world. Digital twins can empower wastewater system operators to make datainformed decisions and prioritize actions that matter most to the communities they serve – environmental sustainability, resilience, and ocean health.”

Reducing nitrogen in effluent by optimizing flows and processes The pilot study found that when hydraulic peak flows

WATER

Using “Sense, Predict, Act” to make informed decisions The project used the approach of sense, predict and act.

In the sense phase, a broad spectrum of data – including historical data, sensor data, and data about weather patterns – is brought together in one centralized platform.

In the predict phase, the data is analyzed using digital twins of the collection and treatment systems. Thousands of simulations are run using machine learning. In the active phase, the operator is guided by recommendations from the digital twins to optimize processes. These include recommendations about how to best use available wastewater collection storage and recommendations about the optimal aeration needed during treatment.

into the wastewater treatment plant are reduced, by storing collection system flows, and when aeration at the wastewater treatment plant is reduced, based on predictive analytics, total nitrogen loads in the effluent can be reduced. "At the coastal utility in northern Europe, we saw some really amazing results," Dr Birt said. “By leveraging digital twins in the wastewater collection and treatment systems, we were able to demonstrate potential reductions of nitrogen in the effluent by 30 percent and reductions in aeration energy usage by 17.5 percent.

"Our team envisions a world where utilities are empowered to make decisions on nutrient management that achieves both economic and environmental benefits, receiving oceans show significant water quality improvements, and all people can live in a healthier ecosystem," she said. "This will transform utilities and how they manage and operate the maintenance of their wastewater networks."

Xylem, makingwaves@xyleminc.com, www.xylem.com

Most advanced foundry group in South Africa Steloy Foundries is specialist in the supply of as-cast and machined components for pumps and valve castings manufactured in stainless steels, nickel-based corrosion resistant alloys, carbon steels and low alloy steels for applications where severe corrosion, high pressure and high or cryogenic temperatures are prevalent. Castings are produced at Steloy Foundries, all of which have access to centralised solidification analyses and modelling (Solidworks) and CNC patternmaking capabilities.

All components are produced in accordance with the relevant ASTM, DIN EN and SEW specifications and conform to applicable NACE specifications. +27 (0) 13 110 2681 support@steloyfoundries.com www.steloyfoundries.com Pipes, Pumps and Valves Africa - Nov/Dec 2021

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PUMPS

Integrated Pump Rentals offers rentals and locally built pump sets Integrated Pump Rental offers the responsiveness customers require, whether considering pump dewatering or dredging rental solutions.

The company operates an extensive rental fleet servicing all sectors including mining, construction, wastewater and general industry.

Lee Vine, managing director of Integrated Pump Rental, says that what sets the company’s team apart from other players in these sectors is its technical expertise and experience, enabling the accurate assessment of individual applications and specifying the most appropriate fit-forpurpose pump rental solution.

The pump rental offering includes submersible drainage and dewatering pumps, slurry and sludge pumps, diesel driven pumps, dredging and hydro-mining systems and flotation devices, hoses and accessories. Rental solutions are provided as a short-, medium- or long-term contracts.

In addition to rental solutions, Integrated Pump Rental boasts the in-house capability to design and build reliable, high-performance diesel-driven pumps locally.

“This has opened up new opportunities and was initiated in response to customer demand,” Vine says. “We have longstanding customers that were unable to source dewatering pump sets within a short lead time and their preference was to purchase and not rent.”

Integrated Pump Rental was able to meet this need, and with its in-house capability can design and build a pump set engineered specifically to provide the flow required in a particular application.

Aspects considered during the process include an assessment of the operational requirements and where necessary the materials of construction are chosen to deal with specific conditions such as water acidity and

abrasiveness. Vine explains that both the wet end for the pump set as well as the balance of components and materials are selected to meet the working conditions.

“Mobility is also a consideration, and we offer pump sets as either a skid or trailer mounted unit, and we couple the system to the customer’s diesel engine of choice.”

Importantly, the pump solution is put together by a team that includes qualified draughtsmen and experienced boilermakers, electricians and diesel mechanics.

Vine emphasises that the team has a hands-on approach with close collaboration between all ensuring that the application requirements are met and that the solution can be delivered within the required time frame.

Commenting on the Sykes pump itself, Vine explains that Integrated Pump Rental is responsible for the Sykes range of dewatering pumps in southern Africa.

Sykes pumps are designed to offer robust and reliable performance and can handle high volumes of water with ease, and the brand has an established reputation for the fast and effective control and removal of water.

The most typical application of Sykes dewatering pump technology is on building and construction sites, civil engineering projects, local municipality works, flood disaster recovery, load-out stabilisation, slurry transfer, ash handling, water boosting and pipeline filling and testing as well as general dewatering activities to lower the water table.

Constructed using quality materials, the Sykes pumps are automatically priming pumps and can run dry for extended periods due to the oil bath mechanical seal assembly.

This feature on the pump allows priming with long suction hoses and suction lifts of up to 9 metres. As suction levels fluctuate, the pump will “snore” until the liquid is available for the pump to fully reprime itself automatically.

“What is significant for our team is that many of the customers who are requesting pump sets built for them are customers that previously rented Sykes pumps from us and were impressed with the performance and reliability of those Sykes units.” Vine says.

While diesel driven pumps are most in-demand, Vine says that the company can also design pump sets driven by electric motors for those applications where electrical power is available on site.

Integrated Pump Rental, +27 (0) 11 894 2906, admin@pumprental.co.za, www.pumprental.co.za

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

Pipes, Pumps and Valves Africa - Nov/Dec 2021

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ADVERTORIAL

HART slurry pumps, redefining Simple Dependable Value “Since the introduction of the HART range of slurry pumps almost three years ago it has earned an enviable reputation of simple, dependable value.” So says Barry Makanji, Managing Director of Africa Slurry Pump Solutions (SPS).

“The combination of consistently superior quality, expert application engineering with process problem solving capabilities, and value-based pricing makes HART a very compelling proposition in the African slurry pump market.”

Unlike many suppliers of mining and minerals processing equipment, SPS is focussed exclusively on slurry pumps.

This single-minded focus and deep specialisation have enabled SPS to bring a comprehensive range of slurry pumps and associated ancillary equipment to market in a comparatively short time.

Also, SPS has established solid relationships with regional distributors in most major African mining locales. “Strong, personal relationships, both internal and external, are the cornerstone of the SPS way. This explains the choice of HART as our brand name,” continues Makanji. “SPS has a specialist manufacturing team with many years of experience and time-honed production techniques that ensures HART products are of consistent high-quality.

This results in fewer breakdowns, and ensures scheduled maintenance intervals are met.”

Expert application engineers, capable of optimising any plant using a what-if approach, are key to SPS’s rapid rise.

The application engineering process yields optimal pump, bearing assembly and motor sizing as well as the correct material selection. In most cases, this results in smaller, less expensive solutions. Savings in life-of-plant spare parts, electricity, and gland service water amplify the capital cost saving. Makanji gloats: “SPS is all about saving customers real money. It is not uncommon to unlock lifetime savings that exceed the initial capital cost of a project.” As a result, the company successfully secured and executed slurry pump projects in countries as far afield as Ghana, DRC, Tanzania and Zimbabwe while making inroads in the established and mature South African market as well.

“Our avidly customer-driven sales team gives our customers unprecedented turn-around times on requests for quotations. Project RFQ’s receive the same sense of urgency, with proposals finalised in days rather than weeks or months as may be the norm. This passion for service excellence is reflected in an uncommonly large, customerfocused inventory of commonly specified pumps and parts.”

“A second facet of the HART brand is that we regard slurry pumps as the heart of any minerals processing operation.

Our mission is to keep these pumps running better for longer.”

He goes on to explain that HART consistently outperforms competitors’ products in like-for-like wear-life cycle trials.

“Add our deep and wide application engineering capability to unlock a whole new level of cost-optimal slurry pumping. We confidently claim that we will outrun the competition when comparing the total cost of ownership”.

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Pipes, Pumps Valves Africa - Nov/Dec 2021 Pipes, Pumps andand Valves Africa - Nov/Dec 2021

“Our extended technical support includes general arrangement drawings and exploded views with comprehensive bills of materials. We believe in education and skills development at all levels, we therefore offer focused training solutions to operators, maintenance personnel, supply chain officers and plant engineers as a complimentary service. We also believe there is no substitute for seeing problem applications first hand – we are on site whenever needed to help resolve operational issues and provide professional failure analysis. These are value-added services we do not charge for”, Makanji concludes. If the results of the past three years are anything to go by, SPS is clearly set to achieve great success with their HART range of slurry pumps. Simple dependable value never looked this good.

SLURRY PUMPS THE HEART OF YOUR PLANT

Many sell pumps,

we provide

Solutions!

Slurry pump projects from concept to commissioning

Complete slurry pumping systems, pumpsets, bareshaft pumps, pump spares

Cost-saving solutions driven by expert application engineering

www.africasps.com +27 79 402 3662 admin@africasps.com Pipes, Pumps and Valves Africa - Nov/Dec 2021 13

Africa Slurry Pump Solutions Out of Africa, for Africa

Macsteel focuses on customer centricity by relocating

PUMPS

To provide a more customer-centric approach to servicing their customers, Macsteel Service Centres SA (Pty) Ltd has moved into a state-of-the-art facility. Macsteel customers will benefit by them offering much larger inventory, speed of deliveries, and efficiencies.

“Macsteel has been growing its legacy for 116 years. A new step in our legacy journey is Pursuing Reinvention to ensure we remain relevant, agile, and focused on providing the best solution and service to our customers,” says Macsteel Chief Operating Officer, Tom Cowan.

“We know how important it is for our customers to have ease of access and options, so by consolidating our Gauteng customer-facing staff and their support function, we ensure a far better and integrated customer experience.”

Macsteel City warehouses are equipped with the latest technology allowing the business to digitise key operations, so all inventory moving in and out of the warehouse will now be barcoded and can be tracked anywhere in the country.

“Digitisation has been a key focus for Macsteel as it enables us to have information at our fingertips as well as develop operational scenarios to make informed decisions. It has been one of the significant areas where the business has focused their efforts to evolve the business, streamline operational efficiency and ensure long-term relevance, agility, and sustainability”, says Cowan.

“Macsteel City allows us an opportunity to improve our offering completely with our prime focus being the customer. There are plans to ensure all lighting used is changed to LED as well as future strategies to install solar panels which will significantly reduce our electricity costs freeing up capital to invest in core areas of our business that will drive customer benefits and growth.”

“We are excited about Macsteel City and understand that change is necessary, especially if we want to align with and meet the needs of our customers. We need to remain adaptable to ensure a sustainable competitive edge,” concludes Cowan.

Macsteel Fluid Control, +27 (0) 11 871 0000, info@macsteel.co.za, www.macsteel.co.za

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

We offer valves for precision processes - and demandingapplications Our valves fulfill the highest of standards and are designed for many years of safe and reliable operation. Our service specialists regularly check, monitor and maintain all relevant system components - depending on what has been agreed.

Our modular framework agreements offer you individual service and spare parts concepts. And we even go one step further. We additionally check systems for efficiency in order to reduce operating costs and increase productivity.

For example, with the SES System Efficiency Service.

ZTS GATE VALVE

GATE VALVE AKG-A/AKGS-A

STAALWEDGE GATE VALVE AKDS/AKD

NORI 500

Contact our dedicated Valves Sales Engineers for all your Valve requirements Tel: 011-876-5600 • Email: info-za@ksb.com KSB Pumps and Valves (Pty) Ltd www.ksb.com/ksb-za Your B-BBEE Partner

BOA - H

PUMPS

Years after their introduction, Tsurumi Pump is seeing an increased demand for automatic moisture-sensing pumps

Dewatering pumps featuring electric probes that detect rising water levels to prevent dry running are becoming more favourable in the construction and industrial market since there’s a tangible need for such automated technology, according to Tsurumi Pump.

Although the company has produced these pumps for several years, a variety of factors such as product enhancements, rising energy prices, labour shortages and the increased appetite for the benefits that the technology can offer mean Tsurumi is now gearing up to meet an anticipated rise in demand across North America. Tsurumi’s KTZE and KTVE series pumps, for example, take the outstanding performance of its KTZ and KTV models and enhance it through the incorporation of a durable, fixedposition stainless-steel probe on the pump head cover, connected to an internal relay unit.

When this e-probe comes into contact with water or other conductive media, a signal is sent to a timer. If the contract lasts for more than one second, a continuous low-voltage electric circuit is formed between the probe and the pump body, acting as the ground, prompting the relay to switch on the pump.

Once the water level has receded below the level of the probe, the pump will continue to operate for a further 60 seconds before shutting off, reducing the chance of short cycling due to potential turbulence in the water, and preventing the pump from running dry. By preventing unnecessary dry operation, damage on the wear parts

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

is minimized, extending the lifespan of the pump. “This makes these pumps ideal for any dewatering application where an operator isn’t present to manually turn them on and off according to water levels,” said Mike Klimes, applications engineer at Tsurumi. “To enable automatic operation, you would typically need to utilize a tether float switch, suspension probe, or pressure transducer in addition to an automatic control panel.” Instead, the Tsurumi models use the far simpler and less expensive approach of a moisture-sensing electrode control device, thereby enabling the costly automated control panel to be replaced with a much simpler manual panel — an immediate cost saving that is soon followed by significant energy savings due to the shorter operating time.

Safe from harm As well as the financial advantages, a crucial factor in the rising adoption of these solutions is how the e-probe technology complements the robust and durable nature of the pumps to which they are attached. Unlike a design relying on tethered float switches, the robust probes do not stick out beyond the pump’s footprint and are therefore at little risk of damage. This enables them to easily withstand the inevitable rough handling at the job

site as they are unloaded from a truck to the ground and then on to the final location. “These pumps are frequently lowered down pipes that provide access deep underground for dewatering,” Klimes explained. “External cables would typically get tangled up in that situation, but that’s not an issue when you’re using electrode pumps. Also, when you’re in a tight space, floats don’t always work very well, and erosion can cause a build-up of debris that will make them even less effective. All of that will have a negative effect on the lifespan of the pump, so our electrode solution promises greatly improved efficiency and less downtime overall.”

Designed to last Tsurumi’s KTZ and KTV pumps have long been renowned for their high performance and reliability. With a durable cast iron body, the KTZ series is designed for the most demanding applications and is easily convertible between high-pressure and high-volume configurations. It features high-chrome impellers to withstand the highly abrasive liquids found in construction, aggregate and mining applications, while dual silicon carbide mechanical seals are isolated in the oil chamber to protect the seal faces from abrasion and corrosion. The KTZE moisturesensing variant is available on models between 2-5 hp, handling 110-385 gal/min at head requirements of up to 82 ft. Offering a weight saving of approximately 25 lbs over cast iron pumps, the compact, wear-resistant KTV models have been designed for light- to medium-duty applications. Their slimline die-cast aluminium body and

Top 10 benefits of Tsurumi’s e-probe pumps • Avoid pumps from running dry • Design is robust and durable to withstand rough handling and transporting • More expensive automatic panel not needed • Great for job site dewatering where pumps are left unattended • Saves the pump’s motor as it prevents failures • The probe is within the pumps outside diameter • Fits in tight spaces where floats don’t work well • No external cables connected to it • This leads to less downtime • Improves overall efficiency

PUMPS

A probe cover will soon come standard with these pumps, eliminating the possibility of the electrode being damaged during transportation or severe-duty operations.

elastomer pump end provide easier handling. A semivortex impeller allows for maximum particle passage size while offering extended parts life. The need for impeller efficiency adjustments has also been eliminated, and the pumps are immune to calcium carbonate deposits. The e-probe KTVE range comprises four models ranging from 85-220 gal/min, at head requirements up to 85 ft. Other Tsurumi pumps incorporating the technology include the HSE and LBA models, and the forthcoming LSCE range.

“These e-variant pumps combine all the brawn of their standard siblings with a clever probe that will turn them on and off automatically,” Klimes concluded. “The effective automation they provide can be extremely helpful in a wide range of applications.”

Tsurumi Pumps Africa, +27 (0) 82 404 4743, enquiries@tsurumipumpsafrica.com, www.tsurumipumpsafrica.com

HIGH PERFORMANCE

FLOW CONTROL Bray provides high performance flow control solutions to handle your most challenging applications.

To learn more about our complete portfolio of valves, actuators, and controls, visit us online at BRAY.COM

Bray Controls Africa (Pty) Ltd Unit 11, ABC Business Park Mastiff Rd, Linbro Business Park Sandton 2090, South Africa Telephone: +27 10 007 3222

Pipes, Pumps and Valves Africa - Nov/Dec 2021

17

Peristaltic hose pump technology in precious metal mining

Several primary advantages are linked to the use of peristaltic hose pumps for high density, abrasive paste transfer at precious metal mines. For competing pump types there is a high degree of difficulty in handling abrasive paste with varying density, over long distances and without frequent breakdowns.

PUMPS

This difficulty is compounded when chemicals are added to the paste.

In summary, peristaltic hose pumps offer benefits that include: • Significantly reduced pump downtime • The ability to perform maintenance in-situ and without the need for special tools • More efficient operations and higher productivity • Greater safety through better handling of aggressive chemicals and abrasive paste • Fewer filters are required and filter capacity can be reduced by 75%.

Disc filters cost around R1.5 million ($100,0000 each so significant savings achieved • No mechanical seal flush water is required: many centrifugal pumps need around 72 litres of water per minute • Less storage required for tailings; the number of basins or pools can be reduced, due to higher slurry density in less water Facing up to social and environmental responsibilities Precious metals are extracted at a greater cost to the environment. Peristaltic hose pumps can help ensure the environment is better protected through safe and responsible transfer.

Mining for precious metals A strong focus on water consumption is present within filtration-based mining as large volumes are required in the process. In the first stage, the ore is crushed and ground, after which the fine ore is mixed with water in froth flotation cells, which serve to extract precious metals.

The resulting tailings froth is thickened in a sedimentation tank, where the overflow is water and the underflow contains concentrated ore paste, typically 40-75%, reaching the higher end of this range at the bottom of the tank.

At precious metal mining facilities it is desirable to have a thickener underflow with a high dry solid content; the less water involved, the higher the efficiency of the filter press. It is the pumps – which are installed beneath the thickener – that determine the maximum allowable dry solid content. As a result, pump technology is the limiting factor.

Mines often use at least two pumps per tank, one to lift from the tank and the other to feed a filter up to 300 metres away. Compared to heavy-duty peristaltic pumps typical centrifugal slurry pumps can not maintain accurate fixed flow rates against such pumping condition variations.

Drawbacks of centrifugal pumps Centrifugal pumps are used widely in mining, especially for thickener underflow applications, but have many notable shortcomings. For example, the quantity of dry solids that can be accommodated by centrifugal pumps is limited. In numerous applications impellers last just a few weeks due to factors such as strong acidity and/ or abrasive content.

To overcome corrosion issues mine operators can use centrifugal pumps made of exotic high alloy materials to reduce frequent major component replacement. However, capital investment for these pumps is very expensive and abrasive wear rates are no better.

Unlike other pumps, the performance of Bredel peristaltic hose pumps is not affected by the abrasive/aggressive nature of slurry and chemicals. Among the many benefits of peristaltic pumps are: • No mechanical seals • No requirement for seal gland water • No seal water flush systems • No moving parts in contact with the pumped fluid • Pumping action without internal friction for increased wear resistance The longer a pump can function without maintenance or downtime, the better. The wear-free performance of hose pumps is an attribute that results from a unique operating principle. Unlike other pumps, the abrasive nature of the

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

product does not influence pump life, so the need for routine maintenance and spare parts is greatly reduced.

Centrifugal pumps continue to run at the set speed, but flow rates decrease as the paste density increases towards the bottom of the underflow thickener (up to 75% solids are typically present in the bottom third of the tank). Bredel pumps keep pumping at the same flow rate, irrespective of the paste density.

Another benefit, certainly in terms of cost is that Bredel hose pumps can reduce filter capacity by as much as 75%.

Not only are disc filters very expensive, at circa R1.5 million ($100,000) each, but the feed has to be constant to ensure working efficiency is maximised. However, even more, relevant to dry solids content is the storage of tailings in the ponds. Also, less volume of paste means smaller dams are possible and reduced water content brings greater safety by reducing the risks of saturated dams. Reduced water content brings greater safety by reducing the risks of saturated dams.

Case study: Niobium extraction Niobium (Nb) is a rare earth mineral with impressive anticorrosive properties, making it very resistant to heat and wear. There are currently only three mines producing the majority of the world’s niobium: CBMM in Brazil; CMOC International in Brazil; and the Niobec mine in Canada.

Paste at the Ouvidor mine of CMOC International is made up of 44% niobium with water, sulphuric acid, isopropyl and a flocculant. The solids content rises to 75% as the pulp becomes more concentrated at the bottom of the underflow thickener tank.

Put simply, centrifugal pumps could not manage such a high concentration of solids. Sometimes piston pumps are deployed for high-density sludge, but the types that can withstand the abrasion levels are extremely expensive.

Bredel hose pumps were installed, using 75mm diameter suction and discharge piping, to discharge the sludge from the tank and transfer it 300 metres to the filter press. The pumps are controlled manually and speed is reduced if the pressure at the filter press increases. Following solids removal by filtration, the remaining wastewater is pumped to a lagoon or tailings dam. At this point, there are still residues of aggressive chemicals in the water. Bredel pumps cope with not only the abrasive solids but also the chemical content.

PUMPS

Pumps like the Bredel hose pumps are virtually maintenance-free as there are no impellers, liners, casings, wear liners and seals to replace, no check valves to clog or wear out. The only wear part is the hose, which can be replaced in a matter of minutes without any requirement for special tools. Longer hose life enables customers to reduce maintenance downtime and spare inventory; two important aspects in rugged and remote mining duties.

At Ouvidor, the centrifugal pumps suffered badly due to abrasive wear and chemical attack. The downtime to repair a pump was at least 6-8 hours. In addition, the pumps had to be removed from beneath the thickener. In contrast, a Bredel hose and lubricant can be changed in less than four hours and does not require a standby pump to be moved into place so both uptime and productivity levels can be increased. The mine has installed several Bredel hose pumps, some of which have been providing reliable operation for nearly a decade. Many are pumping niobium pulp (44%), and although some were acquired for new applications, a number replaced existing centrifugal pumps.

A case in point is a Bredel 65, which replaced a centrifugal pump that required frequent maintenance. Seven years later, the Bredel is still performing strongly, pumping through a 3-metre high, 8-metre long discharge pipe at a flow rate of 7m3/h. Also installed around the same time was a Bredel 50, which replaced a centrifugal pump with an open impeller that again was suffering due to attack from chemicals and abrasive wear. In this tank-transfer application, the niobium pulp is discharged through a 4-metre high, 5-metre long pipe at a flow rate of 4.5m3/hr.

Elsewhere at Ouvidor, Bredel pumps serve applications including dosing of coagulant and reject suction and filter press feed. The latter application was performed by a vertical centrifugal pump which could not transfer the pulp in high concentration or cope with the pressure of the filter press.

The replacement Bredel pump has successfully been in service for nine years, pumping the phosphate reject-with fluosilicic acid at a flow rate of 28m3/h and 7 bar pressure along a 320-metre long discharge pipe (3-metre high).

Watson-Marlow Fluid Technology Group, +27 (0) 11 796 2960, info.za@wmftg.com, www.wmftg.com Pipes, Pumps and Valves Africa - Nov/Dec 2021

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Pumped up to meet the demands of mining

PUMPS

By offering a wide variety of products from one source, Busch Africa has removed from mining companies the costly and onerous burden of sourcing vacuum pumps, blowers and compressors from multiple suppliers.

Mining companies have realised that sourcing products and services from one supplier is more cost-effective and improves efficiency in their operations, as they seek practical ways of coping with a generally sluggish industry.

And, as a worldwide provider of vacuum pumps (including liquid ring vacuum pumps), blowers and compressors, Busch Africa is addressing this demand through a commitment to meeting customers’ needs right along the value chain – from procurement through to after-sales service.

Busch Africa is part of the international Busch Group of companies established in Germany over 50 years ago, and one of the world’s leading providers of vacuum pumps and systems to a wide range of industries.

With its Africa head office in Johannesburg, supported by sales and service branches in Cape Town, Durban and Accra and a network of representatives across the continent, Busch Africa has the local presence needed to meet the demands of the mining industry at all times, providing vacuum pumps and service in all African countries.

Fully-geared Explaining how Busch Africa is always able to accommodate large order volumes from mining companies, Reeza Hoosen, Technical Manager of Busch Africa, explains: “We are able to supply most vacuum pumps, blowers, compressors and spare part kits ex-stock, and are fully geared to service and overhaul pumps in our workshop, or to carry out service work and commissioning at the customer’s site. We pride ourselves on being able to offer 20

Pipes, Pumps and Valves Africa - Nov/Dec 2021

service on our own products as well as on any competitor products.” The new Dolphin LG/LR series of liquid ring vacuum pumps have now been released for sale. The release of the new Dolphin LG/LR series expands the Dolphin portfolio to a pumping speed of 26,800 m3 /h.

The Dolphin LG/LR range is a series of eight robust and reliable single-stage liquid ring vacuum pumps in a base plate design, for 160 mbar and 33 mbar end pressure respectively.

Their proven operating principle enables these highcapacity vacuum pumps to be used in many industrial sectors, including power plants, sugar production as well as the pulp and paper industry.

Even demanding applications, such as the discharge of particle-laden gases or highly saturated vapours, can easily be carried out.

The Dolphin encompasses decades of experience in the manufacture and use of liquid ring vacuum pumps, offering perfect vacuum generation in challenging environments.

The precisely dimensioned range of sizes, extensive range of accessories and choice of construction materials, including cast iron (EN-GJL-200) and 316-grade stainless steel, allow these vacuum pumps to be perfectly adapted to many different industrial processes.

Due to their modular design, various assemblies are possible to suit many applications.

Busch Vacuum South Africa, +27 (0) 11 856 0650, info@busch.co.za, www.buschvacuum.com

Saving operating costs with distributed pumping

PUMPS

Learn how a mixed-use building reduced pump energy costs by 54% using Grundfos Isolutions. Located in Singapore, block 22 at Ngee Ann Polytechnic (NP) is a mixeduse building housing a cafeteria, sports hall, student lounges and office spaces.

The building was finished in 2014 and runs on a third-party BMS with a constant load profile. Its total cooling area is approximately 6000 m².

for the required cooling load. This promises to save at least 50% on the chilled water pumping power and optimise system performance at all times.

The Singapore Building Construction Authority has certified Block 22 as a Green Mark Platinum building. HVAC is responsible for about 60% of the building’s total energy consumption.

Before the Distributed Pumping system was applied, a baseline measurement for cooling tonnage and total energy consumption for the chilled water loop was made over six weeks.

To uphold its Green Mark Platinum rating and achieve even higher energy savings, NP’s management and the Environmental & Water Technology Centre of Innovation (EWTCOI) decided to revisit its HVAC system design, which is based on a chilled water loop.

This included weather information to be able to normalise data when determining a benchmark for the Distributed Pumping solution.

The goal was to identify ways to push energy savings while maintaining a cool, comfortable environment throughout the building.

With a constant load profile, it’s not possible to throttle the primary pumps sufficiently during partial loads as it causes certain areas of the building to receive too little flow of chilled water.

This causes over-pumping, which reduces overall system efficiency. Valves fundamentally control the flow by reducing pressure. Block 22 was using a conventional fixed differential pressure control strategy, which resulted in too much pump pressure and ultimately wasted energy.

Grundfos worked with EWTCOI to retrofit the system with Distributed Pumping, which places smart pumps throughout the building to automatically adjust the flow

Distributed pumping helped block 22 achieve • Reduced pump energy from 9.4 Kw to 4.3 Kw • Increased delta t by 28% • Total pump energy savings of 54% • Exceeded requirements of a Green Mark Platinum building The solution Grundfos’ Distributed Pumping solution comprises 15 MAGNA3 Distributed Pumps, 4 TPE3 primary pumps and our unique solution expertise.

The commissioning process during installation was extremely efficient. Initial pump settings were configured via the Grundfos GO REMOTE app and the flow limits were adjusted directly in the BMS for each pump.

This delivered significant time savings compared to using traditional balancing valves, control valves or PICVs (Pressure Independent Control Valves).

Result During operations, the Distributed Pumps continuously measure the air duct temperature and automatically adjust their pumping speed to achieve the desired temperature.

The system auto balances any load, providing optimal comfort for tenants. Block 22’s baseline system with balance and control valves had a Delta T of 5.3°C. The retrofitted Grundfos system with Distributed Pumps increased Delta T by 28%. Avoiding the valves reduced pumping power from 9.4 kW to 4.3 kW, resulting in a total pump energy savings of 54%.

The occupants’ comfort is high on our priority list – and so is maintaining our Green Mark Platinum rating. Grundfos’ Distributed Pumping helps us achieve both.”

Grundfos South Africa (PTY) Ltd, +27 (0) 10 248 6000, info_za@grundfos.com, www.grundfos.com 22

Pipes, Pumps and Valves Africa - Nov/Dec 2021

A new polypropylene type pump from SMC has been designed to withstand the harshest manufacturing processes, delivering production reliability that lead to cost and energy savings.

The PA5000 process pump from SMC is so abrasion resistant that it is guaranteed a long life managing at least 50 million cycles.

Thanks to its polypropylene body, it can withstand the corrosive effects of moving water, acids and alkali fluids.

The PA5000 also uses up to 53 percent less air to generate energy savings.

Its clever design also features no sliding parts in wetted areas, which not only reduces particle generation but makes it easy to clean, as well as simple and quick to maintain, saving both time and money.

A spokesperson from SMC said: “At SMC we are always looking at ways to improve our solutions to deliver enhanced performance and reliability. Our new process pump does just that – it’s durable and robust, offering long lasting efficiencies and flexibility in difficult operating conditions.” The PA5000 is adaptable and suitable for a range of industry sectors including water treatment, pulp and paper, chemical, semi-conductor, machine tool and print, paint and varnish applications. It is compact and lightweight but achieves high dispensing volume and self-primes, making it an all-round flexible and reliable component.

PUMPS

lve

SMC launches abrasive resistant process pump

SMC, +27 (0) 10 900 1233, asales@smcza.co.za, www.smc.eu

Bilfinger Intervalve Africa (Pty) Ltd. is one of the enterprises in Bilfinger Power Africa (Pty) Ltd., the South African subsidiary of German based Bilfinger SE. For years, we have been adding value to the power, mining, paper pulping and broader industry through comprehensive valve supply, valve maintenance and heat treatment solutions. www.intervalve.bilfinger.com

WE MAKE VALVE SUPPLY WORK

7823 Bilfinger Intervalve - Pipes, Pumps & Valves Africa advert 130(h) x 180mm(w) Valves - Pr1.indd 1

2021/02/17 4:10 PM

Pipes, Pumps and Valves Africa - Nov/Dec 2021

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ADVERTORIAL 24 24

Pipes, Pumps Valves Africa - Nov/Dec 2021 Pipes, Pumps andand Valves Africa - Nov/Dec 2021

Kira Valves & Engineering We offer market-leading products, services and solutions for the most challenging applications and simultaneously succeed in supporting our clients to keep their maintenance costs to a minimum, while maintaining an excellent turnaround time. Our processes are controlled and coordinated by our ISO 9001/2015, ISO 14001 and ISO 3834 Management Systems that measure our quality, delivery and safety standards. The expertise of our personnel, who are familiar with the design principals of pressure vessels, guarantee that quality is not compromised. Kira Valves & Engineering occupies premises of 4000 sq/m which is powered by solar panels and generators. We are suppliers to Sasol, Rand Water, Johannesburg Water, Eskom & Sappi amongst many others.

The markets served include mining, power generation, petro- chemical, food, pulp & paper, iron & steel & water works.

Refurbishment Kira Valves & Engineering are fully equipped to repair and refurbish most makes, types and sizes of valves using skills and experience attained over many years. Our premises consist of a valve refurbishing facility which comprises of stripping, sandblasting, machining, welding, assembly, testing and spraying services. Valves are returned to the original state by applying either the clients’ specifications or working to local and or international standards. Valves up to 3 metres in size are refurbished and individually certified. “Up to 90% of all valves can be refurbished at considerable savings when compared to purchasing a new unit. The client on average saves 40% against the cost of a new valve,” says Mr Manichum.

Our scope also includes various low, medium and high pressure valves. All valves are stripped, cleaned by proper methods, and thereafter inspected to ensure they are within the customer specified tolerance. Valves are reassembled; pressure tested and painted in accordance with our clients requirements. Non-destructive testing such as X-rays, Dye pen testing, UT testing, MPI & PMI may be requested.

Machining Kira Valves and Engineering also offers CNC (turning and milling) and conventional machining services, & can accommodate both production and jobbing orientated quantities. Our machining capabilities go well beyond valve spares and conventional items, as we possess a range of conventional machines to perform such operations. The following machinery portrays the various capabilities that we are able to perform on our premises.

Modifications on valves are conducted using procedures as defined by internationally recognised valve standard such as ASME B16.34 and BS4504. Modifications undergo precise design and testing before being dispatched.

Our resources allow us to be market leaders in valve modifications and thus pride ourselves in having modified valves for some of the biggest companies in South Africa,” says Mr Manichum.

Fabrication Our capabilities in fabrication extend to cast iron, carbon steel, stainless steel, CN7M, stellite, etc. Refurbishment of valves often necessitates the welding of components i.e. Valve bodies and wedges. Welding can be supplied with full certification, Welding Procedure Specification (WPS), Procedure Qualification Record (PQR), Welders Qualification & complete NDT results. Our welding facility also holds a Heat Treatment Furnace which handles up to 1200°C. Our complete welding facility allows for a diverse range of welding requirements to be accommodated, and not limited to valves.

ADVERTORIAL

For the past 16 years, our committed team has been involved mainly in offering valve refurbishment and on-site services to the engineering industry.

Strainers Strainers are used in almost every industry to protect equipment and to ensure product purity. The strainer is installed in a pipeline to remove unnecessary solids from fluids or gases. Straining is accomplished by directing the fluid through a basket where debris is trapped on the inside of a screen element and clean fluid flows through the outlet. We are able to manufacture strainers to the finest micron, and ensure that a cost effective design is used in applications where the flow is least interrupted.

Fabricated designs can be manufactured from existing patterns or foundry requirements.

Sandblasting & Spray Painting We are fully equipped with a 137 CFM compressor, blast pots, air guns and a set of high velocity hoses. We achieve reading of up to 3 SA on sandblasting, where painting and epoxy coating are offered to various thicknesses.

An official Painting & Blasting Application Report with all readings and results is provided, ensuring maximum detail & quality to the clients’ requirements.

On- site Services Our site work capabilities allow us to repair a range of valves off or on site. Our experienced team are capable of performing services in-situ or to remove valves to our machine shop for complete refurbishment works. Services include: • Assembly of a fully equipped container on-site.

• Removal and rigging of piping, flanges and valves from site.

• Stellite hard facing of worn components.

• Re-machining and lapping of worn or damaged valve seats.

• Reverse engineering or OEM spares.

• All valves are pressure tested as per ASME B16.34/ API 598 and thereafter a test certificate is issued.

• Delivery to site & fitment to pipelines.

Kira Valves & Engineering, +27 (0) 11 614 0150, +27 (0) 11 614 0024, info3@kiravalves.co.za, www.kiravalves.co.za Pipes,and Pumps and Valves Africa - Nov/Dec Pipes, Pumps Valves Africa - Nov/Dec 2021 2021 25

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Dezurik hydraulic power units system solutions

VALVES

A wastewater treatment plant contacted DeZURIK about a unique pump protection application. This application required eight 30” Eccentric Plug Valves with hydraulic actuators to cycle between 5 and 10 seconds.

Two Hydraulic Power Units (HPUs) were needed to operate four valves each. The HPUs were in a ground-level operations building and the valves were located many floors below grade.

An individual, local control panel for each valve needed to be located near the valve installation. Both the valve and local control panels had to be capable of possible submergence.

In the case of a power loss, an emergency fail position and a manual override was required. In addition, the HPU control panel needed to communicate with the plant’s Distributed Control System (DCS).

DeZURIK’s Single Source Capabilities DeZURIK was selected as the single-source supplier for the valve package and the hydraulic power source because of its capabilities in designing and building systems solutions, combined with the complexity and unique installation requirements of this application.

The DeZURIK team designed and manufactured the two HPUs to meet the extensive requirements for this project.

The hydraulic actuators were sized to exceed the service conditions.

Position indication and manual hydraulic override were supplied as part of the actuation package on the valve.

Special attention was required due to the submergence

specification. The design and sizing of the HPU were extensive. As usual, system pressure, flow requirements and pump sizing were all part of the initial design.

Then came the design of the emergency fail position capability, accumulator tanks and integration into the HPU system package.

Completing the system design was the control system for the HPU and individual local control panels.

Extensive consideration and engineering were essential to meet the submergence requirement of the individual local control panels as well as the HPU requirement to communicate with the DCS. DeZURIK’s Experience as a System Solution Supplier DeZURIK has designed and produced numerous HPUs supplied to many industries including mining, power, water and wastewater treatment.

DeZURIK can provide customized units to meet specific needs. DeZURIK also manufactures the Hydrastorm HPU in three reservoir sizes and a variety of AC and DC voltages.

This versatile unit packs a lot of power in a small rugged package with variable pressure and flow adjustments. In addition to supplying hydraulic actuated valves, DeZURIK can also supply HPUs as part of a complete system solution.

DeZURIK, +27 (0) 16 981 4551, sales@arcontrols.com, www.dezurik.com

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

YOUR TASK. OUR FORCE. Whatever the dewatering challenge we have the solution for you. Sludge, slurry, big pumps, small pumps, electrical or diesel driven, corrosive abrasive particles or high pH levels, we have the pump that matches your requirements with a reliability and performance second to none.

From the legendary Flygt Bibo to the lightweight Ready, the sturdy Flygt 5000 to the independently-powered Godwin, Xylem covers the full spectrum of dewatering needs. We’ve got your back!

Repair, replace, or retrofit?

Reading the warning signs of an older large-volume water pump

When you see the early signs of a stormwater pump reaching the end of its life or when it becomes obvious that the efficiency is dwindling, it’s important to look at the options and make the best decision for the application.

PUMPS

According to MWI Pumps expert Marc Boudet, there are three options when your stormwater pump begins to fail: Repair the pump This is often the first inclination. Invest a few dollars to replace the bearings, seals, and apply a new coat of paint.

However, Boudet cautions against making such a quick decision. “Are you saving money or putting lipstick on a pig?” he said.

“Sure, in the first 15-20 years this may be ok, but as the pump ages, wears, and corrodes, other items need to be addressed—like the shafts and propellers to name a few.”

Replace with the same type and size pump This seems to be a sensible solution, but certain questions and concerns still exist. There may be no change to the structure, and the new pump may produce the same amount, but ask yourself, does the driver need to be replaced? Is the engine or motor producing the same power it did when it was new?

Did you replace the discharge pipe? Is the roughness factor adding head that you didn’t have before? Is the efficiency the same or are there other options available now that maybe we’re not available 30 years ago?

All of these questions must be evaluated in this decision.

Retrofit with a different style of pump Sometimes, experts have an opportunity to recommend new technology for an old application. Maybe this technology wasn’t around or maybe the end-users or engineers just weren’t aware of the option at the time the pump station was originally built.

When you pull the pump out of operation to perform the analysis, an experienced engineer or service operator can

use his senses to make some critical decisions, Boudet said. “You can just listen and know whether it needs new bearings. You can see if it needs new seals. You can learn some things just through listening, paying attention, and relying on your own experience.” With these options in mind, first ask a few key questions to help determine whether repairing, replacing, or retrofitting is the best option.

Is there a different type of equipment that may work that may also save us some money?

Boudet recalls an example from a pump station in Louisiana in which 54” horizontal pumps were installed in the 1950s. There was a line on the suction side and another on the discharge side. Both lines were submerged.

A vacuum pump would evacuate the air, pull the water up to the propeller and then the pump would start, creating a siphon. This is good in theory unless one side is out of the water. There was not enough horsepower to pump without the vacuum pulling water from both sides. Boudet said that hydraulic pumps did not exist until the late 1960s, so retrofitting an upgraded technology into an application like this one sometimes makes a lot of sense.

Are the materials worn out?

“When you get the pump into the shop and realize, for example, that the steel that should be a 10.6 mm (1/4”) thick is now 4 mm (1/16”) thick, well, you may not be able to make the repairs needed to put this pump back into operation,” he said. “When you sandblast it, does it blow holes right through it? It’s a good idea to think in terms of determining if it followed the ‘80 percenter’ rule. This means that if it is 80 percent of the cost of a new pump to repair it, and all you would really keep is the baseplate and the elbow and everything below it like the column, bowl section, intake valve — and everything else would need to be replaced — well, maybe it’s time for a new pump.”

Is this the right pump for this application?

Some people will install the wrong pump for the application strictly because that’s what they’ve always known. They may not shop around for a more efficient pump option, or maybe a technology that didn’t exist when they originally installed this one may be a better solution for this particular application.

How have the events and circumstances of the site changed?

Considering whether to upgrade or not could mean installing a better pump that is more powerful or more efficient for the application. However, what happens if the circumstances change throughout the pump’s life?

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

You might find for example, when the pump station was installed only 20,000 GPM was needed because it was not a fully-developed neighbourhood. Many years later there may be a lot of runoff due to development.

When is it time to replace your stormwater pump?

It comes down to cost, Boudet said. It’s not simply when it doesn’t run, but when it’s no longer cost-effective to operate it.

Perhaps there is more concrete and more asphalt and now that same location might require double the flow than it once did.

Is a rental pump an option if you can’t afford to repair, replace or retrofit the pump?

MWI Pumps can provide rental pumps that the customer can utilize while their pump is being repaired, or while they are considering options to replace it.

Is it more expensive to repair it than to replace it?

Boudet said this is a critical question. “If you have a pump that’s 30 years old, and it will cost you R239,000 ($15,000) to repair it, ask yourself if it’s really worth it to put R239,000 ($15,000) into something that is only worth R159,000 ($10,000)?

In some cases, it’s a better idea to spend R796,000 R955,000 ($50-60,000) to replace it.” There are many customers in certain industries who may continuously make repairs because they want to go the cheapest possible route, Boudet explained.

“However, a municipality will generally look at a R1,5 million ($100,000) pump and think about how it’s a bad idea to spend R1,2 million ($80,000) to fix it. A stormwater pump may last 30-40 years, so perhaps this is a good time to just replace it.”

However, this is only a temporary option for a permanent stormwater pump station, Boudet said.

“It’s not a great idea to remove one used pump and replace it with another used pump as a permanent solution. However, MWI has the capability to provide new pumps and offer the customer rentals at a reduced price to do the job temporarily while their new pumps are being manufactured.”

There are many considerations when making a final decision on whether to repair, replace, or retrofit a failing stormwater pump.

PUMPS

“This is one of the beauties of hydraulic pumps,” Boudet said. “We can install a pump with 200 horsepower to maybe only pump 15,000 GPM. We install hydraulics that handle this but with a cam change, we can up the hydraulic oil flow to pump more gallons per minute. As long as the original horsepower can meet the higher flow condition, this is no problem. Looking at things this way and thinking outside the box can provide some interesting and creative options.”

MWI Pumps has a team of experienced, dedicated, inhouse sales engineers to help with these decisions.

“Replacing is not always the best option, but sometimes it is,” he said. “A new pump doesn’t mean it’s the best choice for the application. The original pump may not be doing the job appropriately.”

MWI Pumps, info@mwipumps.com, www.mwipumps.com

Pipes, Pumps and Valves Africa - Nov/Dec 2021

29

Verder Pumps partner with ProProcess on Anglo American project

PUMPS

Verder Pumps South Africa, a market leader in advanced industrial pumping solutions, has been selected as one of the preferred pumps suppliers for Anglo American Platinum’s new Modular Fines Flotation Pilot Plant and supplied 16 pumps for various applications within the mobilised plant.

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In August 2020, the modular process plant supplier ProProcess was awarded an engineering, procurement, and construction contract for Anglo American Platinum’s new Modular Fines Flotation Pilot Plant. As a preferred Anglo American vendor, Verder supplied peristaltic pumps to ProProcess on the project.

(40 ft.) marine container dimensions. The plant consists of more than 40 flotation cells (including a high-intensity flotation cell), a mill, approximately 30 tanks (some agitated), approximately 50 pumps (including centrifugal slurry, peristaltic, and vertical spindle), blowers, compressors, and other items.

This test facility for platinum concentrate flowsheet optimisation had to be designed with maximum road transportability in mind, as it is earmarked to be moved around various concentrator sites owned by Anglo.

Verderflex peristaltic pumps are manufactured in the EU within ISO 9001, ISO 14001 and ISO 18001 accredited facilities. The Verderflex positive displacement pumps are used with a large variety of fluids.

To this end, the entire plant was fitted onto 16 roadtransportable ISO frame skids conforming to 12-metre

The liquid is contained within a flexible hose or tube fitted inside the pump casing. The hose or tube is the pump's

Pipes, Pumps and Valves Africa - Nov/Dec 2021

only consumable part. This makes the Verderflex peristaltic hose and tube pumps the ideal solution for “difficult to pump” liquids or demanding applications.

These range from smaller vending machine OEM pump modules and precision metering tube pumps to the world’s largest high-pressure hose pumps pumping dense, solids-laden, mining thickener slurries and highly abrasive, viscous or corrosive liquids.

PUMPS

The pumps selected on this project included the Verderflex VF65, Dura 25, Dura 35 and Dura 45. “Pilot plants have much less stringent equipment requirements than production plants and this needs to be taken into consideration to avoid over designing the plant, thus unnecessarily escalating the capital outlay. “ “This required a lot of out of the box thinking and many new ideas and concepts were explored to ensure a builtfor-purpose plant,” says Stefan van Dyk, project manager at ProProcess.

According to Kean Southern, mechanical lead at ProProcess, the firm applied its specialised modular approach to the design of this plant for simplified site installation and ease of transport.

“All equipment is pre-mounted, piped up, and tested at our workshop before shipment to site. Once testing is complete, all that is required is for flexible, interconnecting piping between the frames to be disconnected - which is made easy with the use of flanges and claw couplings.”

“Given the numerous pipe sections run between frames, each connection of flexible hose needed to be tagged to ensure the correct hoses were reconnected during assembly. Since the plant arrives on site already partially assembled, site installation is a breeze,” says Southern.

To avoid the construction of complex concrete bunded areas at each test site location, ProProcess also designed structural bunds in ISO frame format.

together on the project was a positive one.

These bunds, complete with removable sump pumps, are transported separately, and essentially form the ‘foundation’ for the plant structure when placed on a flat surface.

“Over the last two decades of operating in South Africa, the Verder brand and its solutions have earned a reputation of excellence; for providing advanced, cost-effective, efficient and long-lasting pumping solutions.”

Since they are supported at the four corners of the ISO frames, the bund ‘foundation’ can tolerate a certain amount of unevenness, which is compensated for by shimming the corners to ensure a level final base for the ISO frames making up the balance of the plant.

“We were very excited to be chosen as a preferred pump supplier for this project as the use case application is a testament to the capability of our solutions - even in some of the toughest industrial and operating environments,” says Darryl Macdougall, Managing Director, Verder Pumps South Africa.

The Verder team not only provided fit-for-purpose pumping solutions for the plant but assisted in evaluating the pump head resulting from the impulse losses generated by peristaltic pumps.

Overall, the impression of ProProcess and Verder working

Verder Pumps, +27 (0) 11 704 7500, info@verder.co.za, www.verder.co.za

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Tel.: +27 (0)11 704 7500 info@verder.co.za www.verder.co.za

19-05-2021 15:28

Pipes, Pumps and Valves Africa - Nov/Dec 2021

31

Optimizing equipment performance and reliability for the power generation sector

PUMPS

Power generation is an increasingly competitive sector where optimum reliability and efficiency are required for a cost-effective business. Traditional power plants are required to be more flexible in their delivery to the grid and this can change how major assets, such as boiler feed pumps, are required to operate.

To ensure continued reliability and efficiency, pumps in power generation applications can be enhanced using retrofit projects to upgrade materials, adapt specifications and improve performance in their modified applications.

large pieces of equipment is important for keeping capital expenditure projects to a minimum.

From traditional steam turbines to gas-fired, solar and geothermal power plants, pumps are vital assets that make the power generation process possible. As such, their performance and availability have a major impact on the ability of the power station to deliver essential energy supplies to the local grid.

Optimizing performance from existing data The importance of these pumps is highlighted by the performance data that is continuously collected and stored by the power station's maintenance team. From raw data, a few insights can be gained, but a comprehensive audit of data from 12 months can be much more revealing, especially when combined with performance curves and datasheets from the manufacturer.

Changing energy landscape The increasing prominence of renewables, such as wind and solar, has led to a change in the way more conventional power stations operate. The cyclic nature of certain renewables means that some mainstay power stations have to change their mode of operation from constant output to peak lopping to make up for any shortfall.

A complete pump energy audit can identify true operating ranges and establish the amount of time it runs in the preferred and allowable operating ranges as well as establishing the total energy consumption by each pump. Further analysis of reliability data such as bearing tem¬peratures and vibration readings can identify potential issues that may not be obvious during routine inspections.

This, in turn, has a direct effect on the assets that are used to create electrical energy. Large pumps, such as those used for cooling or supplying water to the boilers, are major investment items with significant operating costs. For these pumps to be running at anything less than optimum efficiency can affect the whole business model.

As the operating routine of a legacy power station changes to support increasing production from more sustainable sources, this will impact the efficiency of many pumping assets. Using a pump energy audit, it is possible to identify design improvements and retrofits that can be quantified in terms of their energy savings and reductions in carbon dioxide emissions. This will also enable the return on investment of any upgrade projects to be calculated.

High-energy pumps are responsible for a large proportion of energy costs, making as¬set efficiency an essential criterion. As a result, extending the service life of these

Root cause analysis Take, as an example, data analysis of a supercritical coalfired power plant that has revealed the five most common causes of premature wear and failure in pumps. Operating pumps away from their best efficiency point (BEP) is the most obvious; running them at low flow or well below their rated speed is not recommended for any length of time.

Frequent starts and stops, which naturally lead to repeated changes in flow, along with long periods of inactivity increase the risks of premature wear further.

The change in operation from baseload to power lopping invariably leads to a significant increase in the number of starts and stops.

The repetitive contact between stationary and rotary elements greatly increases the risk of seizure. Increased running clearances result in a reduction of efficiency as well as greater vibration and higher bearing temperatures caused by unbalanced thrust. When confronted with a significant change in their application, operators are

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

faced with a choice: replace the assets with equipment that can operate more efficiently or update the design of the existing plant. Both in terms of lead time and total expenditure, the latter option is usually the most effective.

By reviewing the performance of individual components, it is possible to build a step-by-step improvement of the whole machine. Introducing non-metallic wear rings and bushes as well as hard-facing of wear parts can significantly improve the durability and efficiency of the parts affected by more frequent start-stop cycles. Similarly, upgrading components with modern materials, such as PEEK, and improving bearing designs can improve the long-term perfor¬mance of important pumping assets.

The original design of the plant required seven pumps to supply the boilers with two remaining in reserve to allow planned maintenance to be completed without compromising output. Over the years, worn seals increased clearances and reduced efficiency meant that more recently all nine pumps were required to maintain sufficient flow to the boilers.

The operator explored various options to return the pumps to their initial performance levels. The original equipment manufacturer (OEM) could repair or replace the pumps, but the costs and lead times for these options did not meet expectations. Instead, the decision was taken to partner with Sulzer and retrofit two of the pumps in the short term, with the rollout of a similar upgrade program for the remaining pumps planned later.

Renewed performance The retrofit upgrade included efficiency improvements from the replacement of non-metallic wear parts, seal improvements and the installation of a mechanical enhancement of the cou¬pling system. State-of-theart equipment, including 3-dimensional laser scanning technology, was used to create the engineering models and the new parts were produced using the latest casting techniques.

Reverse engineering and innovative manufacturing techniques greatly reduced the lead times for the parts compared to those offered by the OEM. The new designs ensured the installation of the upgraded pumps was as simple as possible, with the suction and discharge connec¬tions, as well as the centre-line geometry, identical to the originals. This enabled the pumps to be installed on the same footprint and connected to the existing pipework easily.

Several recommendations were made about the materials used in the construc¬tion of the new pumps to minimize erosion by specific factors associated with this application.

As with any new pump project, the design was developed

to best suit the performance char¬acteristics of the application and deliver the most cost-effective solution.

The project returned the plant to its original pumping capacity with an additional benefit of the new pumps delivering a 5% increase in efficiency over the 'as-new figures of the origi¬nal pumps. Together with a lower power requirement, this is delivering ongoing cost savings for the plant, and the investment in the pump refurbishment was paid off in less than three years.

PUMPS

New life for boiler feed pumps Large-scale power plants that generate electricity using steam turbines need boiler feed pumps to supply substantial volumes of water to the boilers. These pumps have high ener¬gy requirements, which means that even single-digit improvements in efficiency can make a significant difference to operating costs. In one plant, nine such assets were installed over 30 years ago, but over that time their overall efficiency had dropped.

Creating spares for any pump As demonstrated in the aforementioned example, the technology used to design and man¬ufacture components for a retrofit project can be equally applied to spare parts for direct replacement. Applying reengineering techniques and expertise in hydraulic and rotational anal¬ysis ensures high-quality parts are delivered. Even if the OEM cannot supply drawings, reverse engineering procedures, including laser scanning, computational fluid dynamics (CFD) and 3D printing, can be applied to create new parts.

Further improvements can be gained by taking advantage of the advances in materials that have occurred since the original components were manufactured. Older pumps are often created using materials that cannot be easily welded such as cast iron and bronze. In many cases, the original materials can be upgraded; the replacement of bronze with stainless steel is a common occurrence.

Even the largest components can benefit from this process.

Take the example of a cooling pump that needed a new impeller and matching suction bell. The new impeller was manufac¬tured from 316L stainless steel and weighed 5,000 lbs (2.25 tonnes), while the new suction bell was fabricated from 304L stainless steel. The matched components were installed during a planned outage at the power generation plant.

This process can help to improve both service life and reliability, especially in applications that experience abrasive or corrosive conditions. Furthermore, the overhaul time can be estimated accurately, allowing equipment owners the opportunity to plan any process shutdowns and minimize the impact of the maintenance project. In some cases, a pump failure may have to be rectified with a temporary solution until a scheduled outage, when the pump can be removed and repaired with a more robust solution. In this situation, detailed

Pipes, Pumps and Valves Africa - Nov/Dec 2021

33

measurements and modelling can be done during the initial repair process, allowing the new component to be manufactured before the scheduled outage to minimize downtime.

PUMPS

Improving speed control Looking beyond individual parts, improved efficiency of feedwater pumps for a revised operat¬ing cycle can be achieved by enhancing speed control. Since gas-fired plants are increasingly required to operate 'off-peak', the output needs to be varied to match the demand.

In this situation, the fixed amount of generated steam pressure has to be broken down across valves on the high-pressure feed system. Configuring a variable speed drive to the feedwater pumps can provide significant improvements in efficiency that will also help to minimize oper¬ating costs.

The conventional options would include a variable speed drive (VSD) and a hydrodynamic speed coupling. However, both of these have several disadvantages: chiefly the size, inconvenience and cost of installation for the medium voltage VSD and the inherent efficiency losses of the coupling. These two options do have advantages though, the VSD offers good energy efficiency and the coupling is compact and relatively easy to fit, sitting between the main motor and pump.

There is also an innovative third option, one that was developed for the renewable power industry and delivers the benefits of both alternatives and none of the negatives. A variable speed electro-mechanical drive offers a compact, convenient solution that can be installed be¬tween the motor and pump and is extremely energy efficient, even more so than a large VSD.

The electro-mechanical drive train allows the main motor to remain mounted in line with the pump. It uses a planetary gear arrangement driven by a high power servo motor and variable speed drive system as an override that takes over progressively as the required operating speed drops.

The addition of the electro-mechanical drive makes the entire power transmission system sup¬plying motive power to the pump up to 95% efficient. In an example installation, the original 2.9 MW (4’000 hp) power demand was reduced to 1.85 MW (2’500 hp) with a 5% improve¬ment in inefficiency.

The new arrangement provided a power saving of over 1 MW, which translates into a consid¬erable saving every year that has been estimated between R3.9 million (EUR 218,000 / USD 237,000) and R7.8 million (EUR 436,000 / USD 475,000), depending on the annual operating hours.

Furthermore, the initial installation costs are lower than those for a variable speed drive and the overall efficiency is higher.

Conclusion As power generation plants adapt their operations to suit the changing marketplace, the vol¬ume of renewable sources is growing, making for increased competition.

For older installations, the focus on pump efficiency and reliability is becoming more important to ensure continued cost-effective operation.

Making use of existing data and applying expert analysis and interpretation can identify bad actors and justify projects to improve reliability. Adjusting pump performance to match new operating conditions also improves efficiency and reduces energy consumption.

Rerating or retrofitting pumps requires expert knowledge and experience. From the ini¬tial investigation to determining possible solutions to creating alternative designs and proving the new performance levels, specialist facilities and expertise are essential.

By working with an expert in pump design and manufacture, such as Sulzer, who also has the application knowledge to understand the precise requirements of each retrofit project, it is possible to evaluate the opportunities and make them a reality. Furthermore, when the engineering company retains in-house facilities to produce new components quickly and to exact tolerances, as well as comprehensive testing facilities, then the time to complete such a project is minimized.

For operators of large pumps that need to alter the equipment’s specifications to increase performance, retrofit projects offer considerable advantages. Improved reliability and efficiency can deliver significant savings, with an excellent return on investment and reduced lead times. Coupled with extended service life and the ability to coordinate with planned maintenance outages, power generation facilities can quickly enhance their competitiveness using targeted pump retrofit programs.

Sulzer Pumps (South Africa)(Pty) Ltd, +27 (0) 11 820 6000, mari.goosen@sulzer.com, www.sulzer.com

34

Pipes, Pumps and Valves Africa - Nov/Dec 2021

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Reducing pumping system TCO: 3 valuable steps

PUMPS

Energy costs remain a prevalent factor in the total cost of ownership (TCO) of industrial pumping systems, often accounting for 40% of overall consumption.

However, it is possible to reduce the energy consumption of pumping by at least 30 percent if the appropriate energy management practices are put in place.

The first is step is for an organisation to acknowledge the high energy costs of pumping systems and introduce proper steps to implement cost reductions through efficiency improvements. Furthermore, several barriers need to be addressed: • Lack of proper metrics - energy efficiency is traditionally not used in assessing performance; often energy procurement and efficient operations aren’t consistent or standardised metrics are not utilised; • Knowledge gap – a lack of awareness in energy efficiency opportunities is prevalent and as a result, potential savings and other benefits are missed; and • Fear of investment – operations personnel often struggle to present attractive (large or small) investments to their finance organisations.

What is required is the implementation of a sound energy management strategy that features practical and attainable steps to address the reduction of TCO, whilst realising the benefits of an efficient pumping system Energy Efficiency Management Industrial production cycles continue to be influenced by variables such as market demand, the weather, local regulations, and energy supply. This means that factory and building operators need to understand how and when energy is used to minimise consumption and related costs.

In the case of pumping systems, efficiency is impacted by • A mismatch between the pump deployed and the actual system requirement (i.e.: undersized or oversized); and • The improper use of throttling valves and damper technologies to control the flow of liquids.

Fortunately, the above can be remedied by implementing simple actions such as replacing fixed drives with variable speed drives. Connected to a pump, a variable speed drive can control speed, pressure, and flow in conjunction with dynamic process and production requirements.

Asset Management The maintenance cost of physical assets can represent as much as 25 percent of TCO. Maintenance, however, is nonnegotiable as failure to do so can be catastrophic, resulting in costly downtime and production loss. In pumping installations, many moving parts mean that proper maintenance of motors, drives, pumps and associated pipes is crucial. Numerous steps can be taken to assure that maintenance costs are kept at a minimum while the integrity of systems is kept stable: • All pumps should be operated within the parameters of a given pump's specifications (often stated in the pump supplier's instruction manual/datasheet); • Variable speed drives can help to keep the operating point close to the BEP (best efficiency point) and protect the pump against destructive forces generated by inefficiencies.

• Monitoring the operating point of a pump and its efficiency provides diagnostics that can help predict when potential system problems will occur.

Energy Cost Management Building owners, water/wastewater, and oil and gas facility operators are presented with utility bills that have multiple components.

However, by implementing best practices for utility bill management, energy cost reduction can be realised.

Below are a few simple actions: • Review the utility contract to understand the charges associated with the bill and how it can be controlled.

• Adjust the timing of energy usage from the peak rate period to the off-peak period as much as possible • Ensure the correct pump system size (drive + motor + pump).

• Reduce the amount of non-revenue generating energy consumption.

• Applying smart motor starting methods (Variable speed drives) to motor and pump systems By pursuing best practices in energy efficiency management, asset management, and energy cost management, the TCO of pumping system networks can be reduced by up to 20 percent. Moreover, one simple technology, the variable speed drive with embedded energy management functionality, has the capability of being a major contributor to achieving this TCO target.

Schneider Electric, +27 (0) 86 130 0222, Za-ccc@se.com, www.se.com

36

Pipes, Pumps and Valves Africa - Nov/Dec 2021

The PeriBest peristaltic pumps The PeriBest peristaltic pumps have been designed & manufactured to solve a wide range of highly demanding applications within the Water treatment market & industry in general, such as Chemical, Food & Beverage, Paper & Ceramics, Mining & Construction.

PUMPS

The development of the equipment is based on an extremely heavy-duty design with XXL rollers, the latest generation peristaltic hose with longer service life with quick & simple assembly, commissioning & maintenance that notably reduces downtime & improves operating costs.

This highly competitive & effective development has been achieved through strong knowledge of peristaltic technology & its limits & requirements. This has led to a differentiated product with large competitive advantages compared with the traditional competition in this sector.

Innovation, quality & technology are essential conditions for the development of the new PeriBest Pumps product line.

PeriBest Pumps is a company created & based on more than 15 years of experience in the peristaltic pump market. It has extensive knowledge of the technology, its advantages & applications & of the existing & potential market.

experience. The company has a highly qualified team led

by David Gil and Ricard Montsant who have extensive experience of more than 15 years in the industrial peristaltic pump market. Using their knowledge of the limits & advantages of peristaltic technology to the full so that the best pump for each application is always chosen.

This market knowledge has allowed the PeriBest Pumps management team to orientate the company & the product line itself towards a notable improvement of equipment already existing in the market. This is a result of a very clear and specific competitive advantage that strengthens & improves any other traditional product line.

Their capacity to adapt the products to the needs of customers is one of their main strengths. Thanks to an ideal alignment of all the company’s areas, mainly pump design & their manufacturing process, their response & delivery times are unmatched.

The innovative design, adaptation to customer needs, choice of equipment, always geared towards finding the best option both in terms of purchase and maintenance, the competitiveness of the product range & the flexibility & professionalism of our team positions our company as a growing company of the future with a year-on-year increasing market share.

At PeriBest Pumps, they work tirelessly to identify their customer’s needs, to give them the best support & service to achieve maximum satisfaction & an excellent customer

Offering high value-added products that are wellpositioned & very competitive within the main markets & that have the best service guarantees.

Represented in Africa by Air & Vacuum Technologies (Pty) Ltd on an exclusive basis please feel free to make contact for any assistance you may require.

Air & Vacuum Technologies, +27 (0) 11 318 3241/2/3/4, info@vactech.co.za, www.vactech.co.za

InstruPump, a division of Air & Vacuum Technologies, are the SOLE agents for PeriBest in Africa. Manufactured in Spain, they make a HEAVY duty, XXL roller peristaltic pump for continuous use in the toughest African conditions. Used for dosing Sodium hypochlorite, Ferric chloride, Hydrochloric acid, Sulphuric acid and other acids and transferring juices and sauces, dosing additives, colourings, flavours,enzymes, dairy products, yeast and oils, among others.

SALES, SPARES AND REPAIRS

info@vactech.co.za 011 318 3241 / 2 / 3 / 4 www.vactech.co.za

Pipes, Pumps and Valves Africa - Nov/Dec 2021

37

Motors, fans & pumps: 4 common causes of rotating asset failure and how to prevent them

PUMPS

Preventing failure of rotating assets with predictive maintenance using condition monitoring solutions. It’s every facility manager’s nightmare. A catastrophic failure where one of the plant’s critical production assets fails without warning and causes secondary damage to an attached asset.

Production is stopped, and revenues are in jeopardy.

Industrial facilities may have hundreds of rotating assets such as motors, pumps, fans, compressors, and gearboxes.

It can be a complex task to ensure they’re all healthy and running properly. This paper looks at four common causes of failure in rotating assets and addresses how condition monitoring can be used to prevent failure. Sensors that detect temperature rise and vibration abnormalities can monitor critical assets continuously, preventing that nightmare scenario.

The practice of Reactive Maintenance, or running assets until failure, has long ago been replaced in most facilities

by Preventive Maintenance, which prescribes routine checks and upkeep at preset intervals. In the case of vibration monitoring, the process is done by a technician walking the plant floor visually checking and lubricating rotating equipment and or collecting vibration data with a mobile sensor.

While this is much better than the former method, there are drawbacks to preventive maintenance. Even if you’re checking your assets every month or two, that still leaves 30 to 60 days between checks for something to go wrong. And routine checks don’t always reveal gradual degradation of a component. In addition, the process is labour intensive and costly.

Predictive Maintenance (or condition-based maintenance) is the practice of placing sensors on the rotating assets and sending performance data to a controller for analysis and trend reporting. This method positively evaluates the health of the asset by continuous monitoring, and it is the best approach of the three.

Predictive improves upon preventive maintenance in two important ways. The fact that monitoring is continuous ensures there’s no gap of time in which problems can arise.

And second, the process is automated, which eliminates the difficulty of tracking a large number of assets.

Predictive maintenance uses vibration and temperature sensors to baseline normal running conditions and trend performance data over time. This process can detect gradually degenerating bearings early by trending and reporting changing vibration conditions.

The main benefit of predictive maintenance is the elimination of unexpected asset failures and unplanned downtime. And it allows for the assets to be serviced during planned downtime.

Industrial automation equipment makers offer a range of wireless monitoring devices that can identify early problems in rotating assets, like motors, fans, and pumps by collecting and analyzing vibration and temperature data.

These devices make it cost-effective to monitor asset health parameters, set benchmarks, chart trends, set warning thresholds, and trigger alarms.

This has advantages that include: • Reducing the possibility of motor or attached equipment damage and the associated, unplanned downtime • Allowing advanced notice for corrective maintenance scheduling • Easily collecting data from remote locations via wireless communication and sending data to the cloud and allowing remote access • Offering the ability to review data trended over longer periods.

• Having a more strategic approach to maintenance that reduces stress and uncertainty Vibration Parameters: Velocity & Acceleration Condition-monitoring equipment can identify component defects by evaluating the vibration parameters of velocity and acceleration. Velocity is the measurement of how fast an asset is moving back and forth (or vibrating) in multiple axes. Acceleration is the rate at which the velocity

38

Pipes, Pumps and Valves Africa - Nov/Dec 2021

increases from one speed to another. Vibration sensors can detect a rotating asset’s vibratory movement: side-to-side, up-and-down, or back and forth. Once the acceleration waveform sample is collected by the controller, its vibration analysis software processes that data to produce a velocity measurement as well.

Faults found using the velocity parameter will typically be vibrations you can feel but not hear. Faults found using the high-frequency acceleration parameter will be vibrations you cannot feel, and you may or may not be able to hear.

Temperature Condition-monitoring equipment also evaluates rotating asset health by trending bearing temperature. Awareness of temperature rise is an important part of the predictive maintenance regiment. While vibration anomalies first appear in the early stages of bearing-health decline -long before damage begins -- rising bearing temperatures appear in the later stages. Unlike vibration parameters, there is no baselining of temperatures calculated by typical condition-monitoring systems. Default thresholds are normally set at about 70°C/158°F for a first “alert” and 80°C/176°F for a “warning.” Motor manufacturers specify temperature ranges for the asset, so users can change the default bearing temperature thresholds as needed.

Four Common Causes of Bearing Degradation in Rotating Assets Bearing degradation is often the result of four common problems with rotating assets. These conditions are all related to either improper installation or improper maintenance, and each of them can be detected via asset vibration signature with the right sensor if installed and monitored properly.

Misalignment of the Motor to the Pump To transmit power from a motor to a pump, the motor shaft is connected to the pump shaft. If these shafts are not properly aligned, it can cause early wear on the shafts, coupling, or pump seal, as well as cause early bearing defects. Each of these can lead to reduced pump life.

There are two ways a motor and pump can be misaligned: parallel and angular. In a parallel misalignment, the centerlines of the motor and pump shafts are parallel but not lined up. In an angular misalignment, the motor and pump shafts are at an angle to one another.

A visual clue that may be present is the pump may be “soft-footed” or “cock-footed,” in which one of its feet is slightly raised rather than sitting flatly on the floor, which is an indicator of the misalignment condition. Misalignment typically results in noise, vibration, and eventually fluid leaks. And it also reduces system efficiency.

Problems with motor-to-pump misalignment can be detected by analyzing velocity and bearing temperatures.

Lack of Proper Bearing Lubrication Bearings can be under-or over-lubricated or fouled with dirt, dust, or liquids, causing friction and heat, which

• Bearings will exhibit a high-frequency vibration, not audible to the human ear but detectable with vibration sensors.

• The bearing vibration will generate a frequency spectrum composed of bearing cage vibration and “false spin” vibration. It is at this and subsequent stages that typical vibration sensors can detect the onset of bearing problems.

• Deformities will appear on the outer and inner bearing races, which will cause another level of vibration that generates a telltale band of frequencies.

• Vibration may become audible, in a high pitch, and the bearing temperature begins to increase.

• Problems with lubrication can be detected with condition-monitoring systems by analyzing high-frequency acceleration, peak acceleration, and bearing temperatures.

PUMPS

A single sensor can properly collect accurate data in two axes, which is sufficient to analyze asset health. A second sensor can be added in certain circumstances to collect additional data.

will lead to bearing failure if undetected. When bearings lack proper lubrication, they will exhibit four stages of deterioration. Each stage has a distinct warning sign, but these warnings will go unnoticed without the proper monitoring sensor to collect and report the data.

Misalignment of Pump Input or Output pipe Pump input and output pipes have flanges to bolt onto mating pipes. If these flanges don’t mate up exactly, it can put a strain on the pipes, causing stress that results in vibration. When mating pipes are not lined up perfectly, pipe stress will twist the pump. Similar to the misalignment of input and output pipes, the asset may be cock-footed.

Vibration generated from pipe misalignment has a unique frequency signature that is used to identify the problem.

The results of pipe stress are early coupling and bearing wear.

Parameters used to detect pump input/output pipe misalignment are high-frequency acceleration, peak acceleration, and velocity, as well as bearing temperatures.

Pump Cavitation Cavitation refers to air cavities or bubbles that rapidly form and burst in a fluid near the pump impeller. These air cavities are often formed when a pump is oversized for the job, causing a higher-than-normal pressure. Engineers like to specify oversized components to ensure they are more than capable to handle their work. But when there isn’t enough fluid for that oversized pump to pull from, it can pull in the air along with the fluid, causing the problem.

When these bubbles experience higher pressure, they collapse, producing tiny shockwaves that cause gradual but significant pitting and wear of the impeller, pump housing, bearings, and seals. The bubble implosions make crackling sounds as if gravel is rattling around the pump housing or pipework. Another symptom of this problem is vibration.

The second source of cavitation is impeller and wear-ring wear. As these components degrade, it creates a small air gap, which can cause cavitation, resulting in similar vibration anomalies. The parameters used to detect cavitation are peak acceleration and velocity.

Banner Engineering, +27 (0) 11 453 2468, sales@turckbanner.co.za, www.turckbanner.co.za Pipes, Pumps and Valves Africa - Nov/Dec 2021

39

Pipes, Pumps & Valves Africa Lifting Africa Golf Day 2021

40

Pipes, Pumps and Valves Africa - Nov/Dec 2021

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41

When crazy things get caught in big water pumps There could be a very easy solution to that pump’s problem. Pump repair specialists can tell you crazy stories about big water pump clogs and unusual items that have gotten caught in pumps, causing unexpected failures.

PUMPS

Things like massive fatbergs in sewers often make the news but common items can be just as troublesome.

While MWI Pumps manufactures large, high-quality pumps with slower rotating elements that are less likely to fail, MWI expert Tom Hyde has seen his fair share of items that can cause problems for any pump.

Here is a shortlist of some of the things Hyde has personally found wreaking havoc for dewatering pumps since the early 1990s: List of Things Caught in MWI Pumps • Buckets • Tires • Alligators (both dead and alive) • Fishing line • Sane nets • Hard Hats • Rope • Tomato Farm Plastics • Rebar • 4X4’s Timber • Logs • Tarps

• Trampoline • Trash cans Metal / Plastic • Grass, lots of grass • Power cords Extension cord • Silt fence • Turbidity barrier (yellow Floating curtain) • Boat bumpers – Floating • Coconut strands • Water Hyacinth • Water lettuce • Hydrilla Submerged grasses • Life preservers Anything from logs to gators can get stuck in a pump “For the most part, only if there is a pump failure or an emergency issue will MWI be called to assist in the maintenance and repair of the pump. If a large piece of debris, or an animal gets caught in the pump causing it to fail, or if it gets hit by lightning – these events go beyond the station’s limited abilities,” Hyde said.

“Most often, there is very little preventative maintenance needed with our high-quality pumps. Hourly station employees can handle the day-to-day operations including tasks such as lubrication or daily run-time documentation.”

If a mechanical breakdown occurs, such as engine or transmission breakdown, pump stations operators will often have their mechanic assess and maintain/repair any issues including simple tasks such as changing the lube on the engine.

MWI Pumps are equipped to handle unexpected items that can block or hinder performance “Our pumps come with a standard grate—also known as a ‘trash rack’ that is affixed to the intake bell,” Hyde said.

“This prevents large items from flowing into the pump.

However, these racks can become clogged with things, such as naturally growing water hyacinth, that can slow down the water flow and prevent the water from getting to the impeller.”

These trash rack clogs can starve the impeller from getting water, which causes the pump to draw in air instead of water, which can cause the pump to “beat itself up” and fail.

Do I remove the trash rack or not?

Many owners might remove the trash rack to prevent blockage at the intake bell. “It’s a double-edged sword,” Hyde said.

“If you don’t take it off, it can starve the pump of water. But if you leave it off, anything from logs to gators can and do end up getting sucked into the pump which can cause it to get jammed.”

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Pipes, Pumps and Valves Africa - Nov/Dec 2021

PUMPS PUMPS FOUNDRY

FIRE PUMPS

Sulzer Pumps (South Africa) (Pty) Ltd Steloy Foundries

T: +27 (0) 13 110 2681 E: support@steloyfoundries.com W: www.steloyfoundries.com

T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com

DEWATERING PUMPS

KSB (Pty) Ltd C.R.I Pumps S.A. (Pty) Ltd

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za HIGH PRESSURE PUMPS

Ukuthela Foundry Projects T: +27 (0) 12 719 8860 E: ukuthela@live.co.za

AIR OPERATED DOUBLE DIAPHRAGM PUMPS

Sulzer Pumps (South Africa) (Pty) Ltd T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com DIESEL PUMPS

SALES, SPARES AND REPAIRS

info@vactech.co.za

0861 VACTEC (822 832)

www.vactech.co.za

T: +27 (0) 861 822-832 +27 (0)11 318 3241/2/3/4 C: +27 (0)82 576 9373 E: burnm@vactech.co.za W: www.vactech.co.za

BOREHOLE PUMPS

Integrated Pump Rental

T: +27 (0) 11 894-2906 E: admin@pumprental.co.za W: www.pumprental.co.za END SUCTION PUMPS

AESPUMP SA

T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

T: +27 (0) 11 792 9550 E: eeeaman@mweb.co.za W: www.ernestee.co.za

CENTRIFUGAL PUMPS

Atlas Copco

T: +27 (0) 11 821 9854 E: david.stanford@atlascopco.com W: www.atlascopco.com

KSB (Pty) Ltd

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

T: +27 (0) 11 823-4250 F: +27 (0) 11 823-4943 E: sales@sameng.co.za W: www.sameng.co.za

T: +27 (0) 031 274-8555 +27 (0) 10 010-0144 +27 (0) 11 822-2868 E: sales@hawkpumps.co.za W: www.hawkpumps.co.za

Sulzer Pumps (South Africa) (Pty) Ltd T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com

MAGNETIC PUMPS

APE Pumps

T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@apepumps.co.za W: www.apepumps.co.za

Stewarts & Lloyds (Pty) Ltd

T: +27 (0) 11 917-0778 F: +27 (0) 11 917-0769 E: peterk@sltrading.co.za W: www.stewartsandlloyds.co.za

SAM Engineering

Hawk High Pressure Pumps

HORIZONTAL SPLIT CASE PUMPS

Ernest Electro Engineering

Mather & Platt

T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@matherandplatt.com W: www.matherandplatt.com

PRICE PUMPS, for Air Operated Double Diaphragm Pumps for harsh mining applications. A&VT are the SOLE Agents for Southern Africa.

Air & Vacuum Technologies

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

AESPUMP SA

T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

APE Pumps

T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@apepumps.co.za W: www.apepumps.co.za

SAM Engineering

T: +27 (0) 11 823-4250 F: +27 (0) 11 823-4943 E: sales@sameng.co.za W: www.sameng.co.za

AESPUMP SA

T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

C.R.I Pumps S.A. (Pty) Ltd

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za MULTISTAGE PUMPS

Aquaplex Pumps

T: +27 (0) 76 476 4084 E: gavin@aquaplexpumps.co.za

AESPUMP SA

C.R.I Pumps S.A. (Pty) Ltd

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

APE Pumps

T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@apepumps.co.za W: www.apepumps.co.za Pipes, Pumps and Valves Africa - Nov/Dec 2021

43

PUMPS SELF PRIMING PUMPS

Sulzer Pumps (South Africa) (Pty) Ltd T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com PINCH PUMPS

VERTICAL SPINDLE PUMPS

KSB (Pty) Ltd C.R.I Pumps S.A. (Pty) Ltd

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com VACUUM PUMPS

Walter Meano Engineering VersaFlo VSE Pumps T: +27 (0) 11 873-8620 F: +27 (0) 11 825-1401 E: wme@mweb.co.za W: www.versaflo.co.za

VERTICAL TURBINE PUMPS

LVSA Group (PTY) LTD

T: +27 (0) 11 680 2005 E: sales@lvsa.co.za W: www.lvsagroup.co.za PISTON PUMPS

Integrated Pump Rental

T: +27 (0) 11 894-2906 E: admin@pumprental.co.za W: www.pumprental.co.za SLURRY PUMPS

PRICE PUMPS, for Air Operated Double Diaphragm Pumps for harsh mining applications. A&VT are the SOLE Agents for Southern Africa.

Air & Vacuum Technologies SALES, SPARES AND REPAIRS

T: +27 (0) 861 822-832 +27 (0)11 318 3241/2/3/4 C: +27 (0)82 576 9373 E: burnm@vactech.co.za W: www.vactech.co.za info@vactech.co.za

0861 VACTEC (822 832)

www.vactech.co.za

PRICE PUMPS, for Air Operated Double Diaphragm Pumps for harsh mining applications. A&VT are the SOLE Agents for Southern Africa.

Air & Vacuum Technologies SALES, SPARES AND REPAIRS

Hawk High Pressure Pumps T: +27 (0) 031 274-8555 +27 (0) 10 010-0144 F: +27 (0) 31 205-4332 +27 (0) 11 822-2868 E: sales@hawkpumps.co.za W: www.hawkpumps.co.za

PLUNGER PUMPS

T: +27 (0) 861 822-832 +27 (0)11 318 3241/2/3/4 C: +27 (0)82 576 9373 E: burnm@vactech.co.za W: www.vactech.co.za info@vactech.co.za

0861 VACTEC (822 832)

AESPUMP SA

T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

www.vactech.co.za

HORMA PUMPS (PTY) LTD T: +27 (0) 11 452 4300 F: +27 (0) 11 452 4400 C: +27 (0) 82 779 2464 E: sales@horma.co.za w: www.horma.co.za

C.R.I Pumps S.A. (Pty) Ltd

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

Integrated Pump Rental

T: +27 (0) 11 894-2906 E: admin@pumprental.co.za W: www.pumprental.co.za

Hawk High Pressure Pumps T: +27 (0) 031 274-8555 +27 (0) 10 010-0144 F: +27 (0) 31 205-4332 +27 (0) 11 822-2868 E: sales@hawkpumps.co.za W: www.hawkpumps.co.za

POSITIVE DISPLACEMENT PUMPS

SUBMERSIBLE PUMPS

T: +27 (0) 11 824-4810 E: info@pumptechnology.co.za W: www.pumptechnology.co.za

uality

Sulzer Pumps (South Africa) (Pty) Ltd T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com

WASTEWATER PUMPS

VAC-CENT SERVICES (PTY) LTD.

Aquaplex Pumps

T: +27 (0) 76 476 4084 E: gavin@aquaplexpumps.co.za

AESPUMP SA

T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

Integrated Pump Technology

Integrated Pump Rental

VAC-CENT SERVICES (PTY) LTD T: +27 (0) 11 827 1536 F: +27 (0) 11 824 3590 E: karishma@vaccent.co.za W: www.vaccent.co.za

VERTICAL SUMP PUMPS

T: +27 (0) 11 894-2906 E: admin@pumprental.co.za W: www.pumprental.co.za

KSB (Pty) Ltd

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com WELL PUMPS

KSB (Pty) Ltd Unique Engineering

T: +27 (0) 11 826-6111 F: +27 (0) 11 826-6162 E: sales@uniqueeng.co.za W: www.uniqueeng.co.za 44

Integrated Pump Technology T: +27 (0) 11 824-4810 E: info@pumptechnology.co.za W: www.pumptechnology.co.za

Pipes, Pumps and Valves Africa - Nov/Dec 2021

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

KSB (Pty) Ltd

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

VALVES BALL VALVES

CONTROL VALVES

KV Controls (Pty) Ltd LVSA Group (PTY) LTD

T: +27 (0) 16 100-4592 E: fred@kvcontrols.co.za W: www.kvcontrols.co.za

T: +27 (0) 11 680 2005 E: sales@lvsa.co.za W: www.lvsagroup.co.za

Bray Controls Africa

T: +27 (0) 10 007-3222 E: sales@bray.com W: www.bray.com

Pleix-Quip

T: +27 (0) 11 736-4994 C: +27 (0) 83 461 0801 E: tiaans@pleixquip.co.za W: www.pleixquip.co.za

Valcon Valve & Controls

T: +27 (0) 11 453-7537 E: valconsa@iafrica.com W: www.valcon.co.za

CHECK VALVES

T: +27 (0) 10 007-3222 E: sales@bray.com W: www.bray.com

MY

CY

CMY

Enserve Engineering Services (Pty) Ltd

T: +27 (0) 11 795 1519 C: +27 (0) 83 303 1437 E: technical@calafrica.co.za W: www.calafrica.co.za

C.R.I Pumps S.A. (Pty) Ltd

Macsteel Fluid Control

T: +27 (0) 82 495 2772 C: +27 (0) 11 383 4000 E: Rowan.Blomquist@macfluid.co.za W: www.macsteel.co.za DIAPHRAGM VALVES

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

C.R.I Pumps S.A. (Pty) Ltd

Invincible Valves (Pty) Ltd T: +27 (0) 11 822-1777 F: +27 (0) 11 822-3666 E: enquiries@invalve.co.za W: www.invalve.co.za

T: +27 (0) 11 822-1777 F: +27 (0) 11 822-3666 E: enquiries@invalve.co.za W: www.invalve.co.za

Kaytar Valves (Pty) Ltd Kaytar Valves (Pty) Ltd

T: +27 (0) 21 987-8292 C: +27 (0) 81 555-5288 E: clinton@kaytarvalves.co.za W: www.kaytarvalves.co.za

Macsteel Fluid Control

T: +27 (0) 82 495 2772 C: +27 (0) 11 383 4000 E: Rowan.Blomquist@macfluid.co.za W: www.macsteel.co.za

Pleix-Quip KSB (Pty) Ltd

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

K

T: +27(0) 16 971 3385 F: +27(0) 16 971 3935 E: mail@enserve.co.za W: www.enserveonline.com

Invincible Valves (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

Y

CALAFRICA Hydronic Solutions

BUTTERFLY VALVES

Bray Controls Africa

M

CM

Pleix-Quip

T: +27 (0) 11 736-4994 C: +27 (0) 83 461 0801 E: tiaans@pleixquip.co.za W: www.pleixquip.co.za

C

T: +27 (0) 11 736-4994 C: +27 (0) 83 461 0801 E: tiaans@pleixquip.co.za W: www.pleixquip.co.za

T: +27 (0) 21 987-8292 C: +27 (0) 81 555-5288 E: clinton@kaytarvalves.co.za W: www.kaytarvalves.co.za

LVSA Group (PTY) LTD

T: +27 (0) 11 680 2005 E: sales@lvsa.co.za W: www.lvsagroup.co.za

Mine Track & Tools (Pty) Ltd T: +27 (0) 11 412 4536/1665 E: info@minetrack.co.za W: www.minetrack.co.za

FLOW CONTROL VALVES

VACSERVE (PTY) LTD

T: +27 (0) 11 827 1536 F: +27 (0) 11 827 3590 E: karishma@vaccent.co.za W: www.vacserve.co.za GATE VALVES

KSB (Pty) Ltd

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

Invincible Valves (Pty) Ltd T: +27 (0) 11 822-1777 F: +27 (0) 11 822-3666 E: enquiries@invalve.co.za W: www.invalve.co.za

Pipes, Pumps and Valves Africa - Nov/Dec 2021

45

VALVES THERMOSTATIC CONTROL VALVES

KV Controls (Pty) Ltd

T: +27 (0) 16 100-4592 E: fred@kvcontrols.co.za W: www.kvcontrols.co.za

Macsteel Fluid Control

VACSERVE (PTY) LTD

T: +27 (0) 11 827 1536 F: +27 (0) 11 827 3590 E: karishma@vaccent.co.za W: www.vacserve.co.za VALVE RECONDITIONING

T: +27 (0) 82 495 2772 C: +27 (0) 11 383 4000 E: Rowan.Blomquist@macfluid.co.za W: www.macsteel.co.za

Enserve Engineering Services (Pty) Ltd Valcon Valve & Controls

T: +27 (0) 11 453-7537 E: valconsa@iafrica.com W: www.valcon.co.za KNIFE GATE VALVES

T: +27(0) 16 971 3385 F: +27(0) 16 971 3935 E: mail@enserve.co.za W: www.enserveonline.com

Mine Track & Tools (Pty) Ltd T: +27 (0) 11 412 4536/1665 E: info@minetrack.co.za W: www.minetrack.co.za

C.R.I Pumps S.A. (Pty) Ltd

VALVES FOUNDRY

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

Steloy Foundries

T: +27 (0) 13 110 2681 E: support@steloyfoundries.com W: www.steloyfoundries.com

Mine Track & Tools (Pty) Ltd T: +27 (0) 11 412 4536/1665 E: info@minetrack.co.za W: www.minetrack.co.za

PRESSURE REDUCING VALVES

KEW Foundries

T: +27 (0) 53 841 0474 F: +27 (0) 53 841 0473 E: info@kewfoundries.co.za W: www.kewfoundries.co.za

CALAFRICA Hydronic Solutions T: +27 (0) 11 795 1519 C: +27 (0) 83 303 1437 E: technical@calafrica.co.za W: www.calafrica.co.za

46

Ukuthela Foundry Projects T: +27 (0) 12 719 8860 E: ukuthela@live.co.za

Pipes, Pumps and Valves Africa - Nov/Dec 2021

May your days be happy, and your heart be light. May your Christmas be merry, and the new year bright!

MAY 25

26 2022

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Pump Rentals and Sales - Electrical and Diesel Accessories Rental and Sales Generator Rental and Sales Dredging - Slurry Sucker and Hydro Mining Contract Dewatering 24/7 Rapid Response Service Team Submersible & Diesel Pump Rentals Slurry Handling Accessories - Panels, Floats, Piping, Fitting

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