Pipes, Pumps & Valves Africa Mar-Apr 2020

ENDORSED BY SAPMA, SAPSDA, SAVAMA AND VAMCOSA

MAR/APR 2020

Saving energy one valve at a time | Most common ways water is wasted

Your BBBEE Level 1 Partner KSB Pumps and Valves, operating out of Activia Park, Germiston, is part of the KSB group, one of the world’s largest manufacturers of industrial pumps, valves and related systems. With a company history that dates back to 1871 in Germany, the KSB Group is one of the most experienced pump manufacturers worldwide.

Since 1959, KSB Pumps and Valves South Africa has brought the groups extensive expertise and portfolio of world class products to the Local Irrigation, Water Transfer and Treatment, Water Supply and Sewage, General Industry, Chemical and Petrochemical Industry, Mining and Construction markets.

Setting the Standards for 60 years.

We are one of the largest KSB manufacturing entities outside of Germany and France, and proudly hold the KSB MBK quality certificate. This certificate is issued to KSB manufacturing sites within the group which are accredited to produce the KSB range of world products for distribution worldwide. This noteworthy accolade underscores the quality processes within our facilities and is a testament to our local manufacturing capabilities.

This combined with the group's unparalleled expertise makes KSB Pumps and Valves a leading pump and valve manufacturer in the local South African market.

KSB Pumps and Valves (Pty) Ltd www.ksb.com/ksb-za • Tel: +27 11 876 5600

CONTENT COVER STORY

ENDORSED BY SAPMA, SAPSDA, SAVAMA AND VAMCOSA

Pamodzi delivers quality time and again

MAR/APR 2020

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PUMPS BMG’s new E-Pulse hydraulic pumps

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Keeping the water flowing and lights burning

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Dry installation of Grindex Bravo pump at iron ore mine

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FLSmidth’s warehousing facility keeps mines productive

10

Verder launches expansion of the Verderflex range with Rapide 5000

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Pump restarts successfully after a closed period

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Atlas Copco’s PAS range – a prime example of unmatched pump efficiencyOne-stop shop service

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Environmental protection a bonus with IPR’s SlurrySucker®

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Xylem Africa implements pandemic risk reduction plan

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VALVES Solutions for manufacturing diaphragm globe valves

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Saving energy one valve at a time

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Swing check valves - A first for RGR Technologies

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Tried and tested and versatile – GEMÜ 1436 cPos with new Profinet fieldbus interface

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PIPES Most common ways water is wasted

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INDUSTRY NEWS BMG providing critical engineering support during COVID-19 lockdown 28 Environmental emergencies as a consequence of COVID-19

Saving energy one valve at a time | Most common ways water is wasted

On the cover

Pamodzi Unique Engineering Tel:+27 (0) 11 826 6111, Email: unique@uniqueeng.co.za Web: www.uniqueeng.co.za

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: Lusana Mrkusic Email: lusana@pumpsandvalves.co.za Email: adverts@pumpsandvalves.co.za

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PRODUCTS & SERVICES Manufacturers need to move water security to the top of their priority list

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Quick payback on polymer wear rings

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New additions to OPTIFLEX level transmitter series

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Understanding the design features to get the most effective solution

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Know your stuff when choosing flow measurement technology

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Incledon launches latest Tekflo universal couplings

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BUYERS GUIDE

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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.

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Air & Vacuum Technologies 29 AMD-Rotolok 35 Bray Controls 11 BMG World 15 CRI Pumps 19 Enserve 23 Hidrostal 27 Integrated Pump Technology 13,OBC JC Impellers 7 KSB Pumps IFC KV Controls 17 LVSA 21 Macsteel Fluid Control IBC Net Logistics 33 Pamodzi OFC Rexus Trading 42 Stewarts & Lloyds 9 Sulzer CS Ultra Control Valves 39 VAMCOSA 41 Watson Marlow 31

Pipes, Pumps and Valves Africa - Mar/Apr 2020

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COVER STORY

Pamodzi delivers quality time and again Local pump manufacturers can, and do, keep company with the best in the world. Not only do products measure up quality-wise, but keeping it local often also makes sense from a cost and operational point of view. Pipes, Pumps & Valves Africa sat down with Holly Smith, Supply Chain Manager at Pamodzi Unique Engineering, a level 1 BBBEE company, to find out why local manufacturing is so important.

For years now local pump manufacturers have been under threat – on the one side the large multinationals and the other cheap imports that in tough economic times have continued to gain attractiveness.

"Developing a local company and strong brand is not easy," says Smith indicating that the challenges are real. "From the get-go, we have kept import items too as few as possible by sourcing most of our material locally. That in itself has been challenging at times however we’ve made some compromises to ensure that we support local suppliers.”

But, she says, there is no doubt that local pump producers do produce quality products that meet even the most stringent requirements of the international market.

"At Pamodzi we have persevered despite the many challenges that have come our way and we have developed a range of products that meet stringent industry quality and safety standards," she says. "It has required hard work and determination, but we stand behind our products. We have managed to hold to our goals of being as local as we can."

Real benefit The benefit of supporting local manufacturing speak for themselves. Not only does it have a positive economic impact and helping in alleviating unemployment, but it also introduces flexibility into the supply chain.

According to Smith, one of the greatest benefits of using a local pump manufacturer is the proximity between the producer and buyer or end-users.

“Being near the pump producer means a customer can access our expertise far easier than if they are situated elsewhere in the world. From being able to meet in person

and build relationships, to them coming into our facilities to look at the production process, there is a much closer relationship than what would be the case if they were importing a generic pump from elsewhere in the world.”

For Smith, the proximity also means reduced lead times.

"Because of local sourcing and local production we can improve turnaround times and pumps are available quicker.”

That means plant downtime is decreased which in turn has a direct impact on cost.

“At the same time one is also able to mitigate risk faster or introduce corrective action should it be necessary," she explains. "Because of the closer proximity, there is improved understanding of the possibilities and/or limitations of any particular process or product and the ability to address these faster.”

It comes down to having a hand on the proverbial pulse.

“We can meet more regulatory requirements and there is far more collaboration between producer and pump buyer than would otherwise be the case.”

According to Smith being able to address local needs is also often at times easier for a local manufacturer that has a real understanding of the local pump operating conditions.

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Pipes, Pumps and Valves Africa - Mar/Apr 2020

Holly Smith, Supply Chain Manager

“We can produce far better quality than what is often imported," she says.

Erika Toto Tlaba, Pamodzi HR Manager, handles skills development and training at the company.

"As local producers, we have a very real understanding of the climate of the industry the client is operating in. At the same time, we have access to hands-on market research and can therefore not only provide the quality pump required but also improve on the current items or design new items to meet specific requirements that will far better suit the business.”

Delivering quality over time

Skills development and employment

Located in Boksburg the manufacturing facility includes a fully equipped machine shop complete with CNC milling, turning, scrolling and a variety of other technologically advanced machinery. It has dedicated assembly and testing processes that support the high quality engineered products.

Smith says in supporting local manufacturing one is also boosting local skills development and overall employment.

“It’s an area that we are extremely passionate about and ongoing skills development and training is critical in our business which in turn directly and/or indirectly add value for our customers with product continuous development.

Not only do we promote learning and education, in that we offer our employees bursaries to further their studies, but create an overall environment where learning is encouraged at all times."

Pamodzi, that stands for togetherness, believe in the power of business to liberate people.

"We have to empower our people more," says Smith. "We have to advocate more for local sourcing, local design, local manufacturing."

COVER STORY

Erika Toto Tlaba, Pamodzi HR Manager

Pamodzi, that employs more than 150 people, has proven that it can compete in the international arena. The company can deliver a bespoke solution to clients from start to finish incorporating all the elements from design right through to delivering a prototype to building the actual pump to commissioning it.

Pamodzi has a diverse pump profile with a strong reputation for service and quality specialising in designing and building pumps suitable for the arduous conditions prevalent in Africa.

“We have the design expertise, flexibility and manufacturing capacity to deliver seamless engineering solutions well suited for an array of industrial, mining and agricultural applications,” says Smith.

Current trends With the current approach being on refurbishing rather than purchasing new having a strong local footprint is more important than ever before.

"Cost-saving remains on the agenda and the focus is to rather refurbish a pump than buy new. We have a range of clients in various sectors and the demand for quality products that are long-lasting and can stand the test of time is something sought for across the board," says Smith. "Having our manufacturing capability has been critical in this market as it allows us to meet the needs of clients quickly and deliver affordable solutions. We can listen to our customers and follow through with products – be it refurbished or new – that they want."

Pamodzi Unique Engineering, +27 (0) 11 826 6111, unique@uniqueeng.co.za, www.uniqueeng.co.za Pipes, Pumps and Valves Africa - Mar/Apr 2020

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BMG’s new E-Pulse hydraulic pumps PUMPS

BMG has recently launched a new range of portable hydraulic electric Enerpac E-pulse pumps, which are critical to all 700 Bar – 10 000 psi operating hydraulic systems.

These E-pulse pumps have intelligent auto-cycle functionality and an efficient power-to-weight ratio, to ensure dependable operation and high-productivity in challenging industrial applications. E-Pulse pumps, with a compact design and well-organised components, are fitted with a smart, brushless DC motor and controller that automatically varies the speed to maximise flow at any pressure.

“Our new lightweight Enerpac pumps can provide power to various 700 Bar – 10 000 psi hydraulic cylinders, nut cutters and torque wrenches quickly and efficiently. E-Pulse pumps can operate hydraulic tools as fast as pumps with motors larger than 0.75 kW. These pumps are currently the only hydraulic torque wrench pumps on the market with intelligent auto-cycle functionality and are the only pumps available that allow an operator to vary the speed between 25% and 100% of full speed,” says Chantelle Janse van Rensburg, Enerpac Product Manager – BMG. “E-Pulse hydraulic electric pumps have an adjustable speed-dial which allows the operator to adjust the speed to suit the specific task, ensuring precise control of large and small hydraulic cylinders and nut cutters, as well as quick and safe completion of work.

“For bolting applications, the operator can set the pressure and operate the torque wrench pump in either ‘manual’ or ‘auto-cycle’ mode. The intelligent auto-cycle function enables press-and-release actuation to the cycle wrench until final torque is achieved, significantly improving completion speed in every application.”

Th E-pulse range features a new interactive pendant that delivers visual and tactile feedback, as well as programming and diagnostic status to the operator. The IP 67-rated pendant, with protection against the ingress of dust and water, can be stored in the handle of the pump and is secured via a magnet. Operation, programming and diagnostics status is communicated to the operator through yellow, green, and red light-emitting diodes (LED) as well as vibration pulses. Fault-codes indicate any issues related to voltage, temperature and button malfunction, or if professional service is required.

The new E series pump range is a high-performance pump, with an 85 hp direct-drive motor, has a six-piston block design that provides even-flow and smooth operation of connected tools. Various models are available from BMG, with a choice of five valves – 3/2 jog, 4/3 jog, 3/2 dumpand-hold, 3/2 dump and 4/2 torque wrench. Flow at rated pressure is 32 in 3/minute, with a maximum operating pressure of 10 000 psi.

Additional features include a 24 V DC power regulator, 6

Pipes, Pumps and Valves Africa - Mar/Apr 2020

BMG’s recently-launched portable hydraulic electric Enerpac E-pulse pumps have intelligent auto-cycle functionality and an efficient power-to-weight ratio, to ensure dependable operation and high-productivity in challenging industrial applications. built-in thermal protection, a 6.09-metre (20-ft.) pendant cord on the torque wrench pump and a 3.04-metre (10ft.) pendant cord on the other four pumps. All models in this range are fitted with a convenient cord management system.

BMG’s E-series pumps feature an IP 54-rated durable aluminium housing which encloses the system components for maximum protection and easy service accessibility.

These torque wrench pumps are fitted with an Enerpac Speed-D-Coupler pre-calibrated (calibration certificate included),10.16 cm (4-inch) gauge and feature an integrated heat exchanger that cools the pump during operation. System components are enclosed for added protection and housing fins provide heat dissipation. Other features include impact-absorbing, vibration dampening feet and integrated roll-cage design.

This system has been designed for easy access to components during maintenance procedures. The pump has an oil-level indicator, convenient oil-fill port as well as automatic breather which needs no adjustment. Draining of oil is not required for pump element maintenance.

BMG’s range of Enerpac high-pressure hydraulic equipment ensures quick, safe and dependable operation in many industries, including mining, oil and gas and power generation, as well as infrastructure and manufacturing.

BMG World, +27 11 620 1606, chantellej@bmgworld.net, Web: www.bmgworld.net

Keeping the water flowing and lights burning Critical pumps in the provision of water and sanitation services, as well as pumps used in the generation of electricity, are being fully supported during the nationwide Covid-19 lockdown period.

PUMPS

Major supplier, KSB Pumps and Valves, has far-reaching contingency plans in place to ensure that any of its mission-critical pumps and other pumping infrastructure across industries will be properly supported.

Company spokesman, David Jones, regional sales manager for sub-Saharan Africa, says the company supplies largescale pumps for the distribution of potable water to the entire southern African region. “During this time of crisis, we will do everything in our power to support our water utilities and municipalities water infrastructure to ensure uninterrupted supply of clean water to all communities. “The same applies to sanitation services where wastewater and sewerage handling is equally important to fight diseases and infection. Our workmen, technicians and engineers are on round-the-clock standby to ensure that pumps in these services run smoothly.�

Jones adds that KSB Pumps and Valves has also played a crucial role in retrofitting and rejuvenating old pumps and steam valves in Eskom's power station fleet to keep the country's lights burning. Along with its modern equipment in newer power stations the company's full support and vast expertise will be critical to ensure uninterrupted power during the shutdown.

Pumping infrastructure for other mission-critical operations such as supporting the country's vast petrochemical operations, dewatering mines, pollution mitigation, agricultural and other operations will also receive technical assistance from the company.

"Although the company's day-to-day operations have ceased following President Cyril Ramaphosa's shutdown directives, we must provide robust technical and support services to mission-critical services and industries," concludes Jones.

KSB Pumps and Valves workers repairing a boiler circulating pump and motor during the time of need to help keep the lights on Emergencies - potable water services, sanitation and wastewater, power generation, petrochemical +27 (0) 83 409 5757, frikkie.botma@ksb.com, Critical services valves sales +27 (0)63 684 6040, jonas.moloto@ksb.com, Valve service +27 (0) 72 096 2889, koos.taljaard@ksb.com, Pump Service +27 (0)83 784 4167, grant.glennister@ksb.com, General enquiries info-za@ksb.com / saleszaksb.com

CASTING QUALITY COMPONENTS

JC Impeller Foundry specialise in manufacturing all types of castings including impellers and other pump components for the pump industry in SA. Cast Iron, SG Iron, LG 2, P8 1, Chrome Iron and Steel & Stainless Steel.

Tel: +27 (0) 11 827 1913 Email: gladman@jcimpellers.co.za Website: www.jcimpellers.co.za

Pipes, Pumps and Valves Africa - Mar/Apr 2020

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Dry installation of Grindex Bravo pump at iron ore mine

PUMPS

An iron ore mine in the Northern Cape is benefiting from the versatility of a Grindex Bravo 800 pump, which was recently dry-installed by Integrated Pump Technology for boosting slurry flow.

According to Justin Bawden, key account manager at Integrated Pump Technology, the submersible Grindex Bravo pump is best known for operating in a liquid environment. In this case, however, it needed to be used as a booster from the wall of one of the mine’s settling dams.

“The distance from the settling dam to the collection pit was about a kilometre, and the fluid being pumped was high in solids,” Bawden says. “This meant that we needed to boost the pressure considerably from the dam wall.

The solution, therefore, needed to consider both the abrasiveness and the specific gravity of the slurry.”

He noted that the previously installed pump was a normal dewatering pump. It had failed due to the extreme wear from the heavy sedimentation in the mine’s settling pond.

In a solution developed in collaboration with Integrated Pump Technology, the mine submerged one of its existing Grindex Bravo pumps in the settling dam. This unit pumps into a 12.7 cm (5-inch) pipeline over a distance of about 30 metres at a head of 8 to 10 metres to the newly supplied Grindex Bravo 800 at the top of the dam wall.

The Grindex dewatering pump range.

“We dry-installed the new heavy-duty Grindex Bravo so that it could receive material from below and boost it to the collection pit,” Bawden says. “It was vital to provide sufficient pump capacity so that sediment did not block the pipeline.”

He highlights that the heavy sedimentation in this application required a fit-for-purpose slurry pump like the Grindex Bravo 800. With its impeller and pump housing made of Hard-iron™, the pump was able to provide the high wear-resistance required.

“The sand and stones in the slurry would quickly cause extreme wear and cavitation inside a normal dewatering pump, which is usually made of cast iron,” he says. “The large throughlet of the Bravo pumps also allows them to handle solids of varying sizes.”

With a rated output of 45 kW and a shaft speed of 1,475 rpm, the Grindex Bravo 800 can deliver an output of almost 100 litres per second in this application. In addition to the pump’s thermal protection to avoid overheating, an optional cooling jacket on the pump can be fitted for use in dry pit applications.

Integrated Pump Technology is the official distributor of Grindex pumps in sub-Saharan Africa. So confident is Integrated Pump Technology in the quality of these submersible pumps, that the company extended the warranty on these pumps to 30 months.

The Grindex Bravo 600-900 pump.

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Pipes, Pumps and Valves Africa - Mar/Apr 2020

Integrated Pump Technology, +27 (0) 11 918 9034, colin@pump-technology.com, www.pump-technology.com

THE RIGHT CHOICE FOR ADVICE & SUPPLY IN ALL APPLICATIONS OF FLUID CONTROL

IRRIGATION

PIPES & FITTINGS

PUMPS & VALVES

FLUID CONTROL DIVISION BRANCHES: ALRODE, BLOEMFONTEIN, BOOYSENS, BOKSBURG, BRITS, CAPE TOWN, DURBAN, EDENVALE, GEORGE, PORT ELIZABETH, KIMBERLEY, KLERKSDORP, MAFIKENG, NELSPRUIT, POLOKWANE, PRETORIA, ROBERTVILLE, SPRINGS, VEREENIGING, VAAL, WADEVILLE, WITBANK, WYNBERG

Customer care: 0860 10 27 99 www.stewartsandlloyds.co.za

FLSmidth’s warehousing facility keeps mines productive

PUMPS

Optimising customers’ production and maximising their return on investment is the ongoing mission of the well-resourced FLSmidth’s warehousing facility in Stormill, west of Johannesburg.

According to Derek Lane, operations manager at FLSmidth, continued investment in the facility over the past decade has kept it at the leading edge of customer service. Today, it has grown to 10,500 m2 under roof and 1,660 m2 under the crane, with dual lifting capacity of up to 40 tons.

“We have technical capability across FLSmidth’s range of KREBS® slurry pumps, cyclones and valves,” says Lane, “allowing us to service customers through sub-Saharan Africa and into the Middle East.”

Meeting customer needs is paramount, and the operation has a strong focus on stocking strategic parts to facilitate the rapid assembly of a new product. In addition to this, and central to the pump operation, is also the efficient refurbishment and retrofitting of equipment. Supporting the customer drive for the lowest total cost of ownership, the Stormill facility also stocks a range of service exchange units assisting mines to maintain uptime.

Strategic stocking is done on the full range of KREBS pumps from the UMD™ heavy-duty, millMAX™, split casing slurryMAX™, gravelMAX™ and vMAX™ range, all of which feature a recessed impeller design allowing the pumps to run dry. Also, Technequip™ valves are stocked in a variety of sizes, both flanged and wafer type. “Our workshop and warehousing capacity equip us to respond quickly to customers in various regions of Africa and beyond,” he says. “This is critical in helping maintain their operational uptime while keeping costs down.”

The quality of the FLSmidth’s KREBS pump range also allows them to be offered to customers on a trial basis.

Trial pumps can be run against time or tonnage targets to ensure that they exceed the performance of existing equipment, says service manager Martin Jones.

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Pipes, Pumps and Valves Africa - Mar/Apr 2020

“The service component in these trials includes a dedicated service technician who visits the site for checking and finetuning during the trial,” says Jones. “This level of technical on-site collaboration from our teams allows operational parameters to be closely monitored and refinements made to specific performance requirements.”

An important cornerstone of FLSmidth’s customer support strategy is closely aligned with the operational drive-by mines to achieve the lowest operating costs possible. Jones says that by providing a range of service support options for all new products supplied, the company can add value to mine sites. Within South Africa, service support options include regular visits by service technicians to the site, as well as more intensive levels of service in the form of Bespoke maintenance contracts, and field service support teams operating in strategic locations.

“Some customers request a period of commissioning assistance, for example, and we can provide experts on-site for as long as the customer requests them,” he says.

Lane highlights the importance of regular and correct maintenance of equipment to minimise lifecycle costs and maximise productivity. To meet this goal, FLSmidth conducts customised training on request for customers.

This could be focused on hands-on maintenance staff dealing with essential day-to-day maintenance. It is also available for higher-level staff such plant engineers, on topics such as product selection. The training can even be delivered in different languages, suited to the region.

The large stockholding of spares at Stormill for pumps, cyclones and valves is based on historical and forecasted customer consumption. Key customers also hold strategic consignment stocks at their sites. These are currently

PUMPS

located in Zambia, the Democratic Republic of Congo and Tanzania, as well as with an agent in South Africa’s Northern Cape province.

The operation is certified with ISO 9001 for quality, ISO 14001 for environmental management and OSHAS 18001 for safety and health.

“This allows us to have the stock as close to the customer as possible, to optimise availability,” he says.

FLSmidth (Pty) Ltd, +27 (0) 10 210 4820, Willie.vanWyk@flsmidth.com www.flsmidth.com

He emphasises that all the Stormill facility’s activity is strictly governed by recognised international standards.

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 Unit 11, ABC Business Park 10 Mastiff Rd, Linbro Business Park Sandton 2090, South Africa Telephone: +27 10 007 3222

Pipes, Pumps and Valves Africa - Mar/Apr 2020

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PUMPS

Verder launches expansion of the Verderflex range with Rapide 5000 Verder Liquids, part of The Verder Group, a global leader in advanced industrial and niche market pump solutions, is pleased to announce the latest addition in the Group’s Verderflex range of peristaltic tube pumps, the Rapide 5000.

The Rapide 5000 has been developed to offer simple, reliable and cost-effective pumping solutions for industrial applications. The design combines the flexibility of the Vantage 5000 pump head with the simplicity of a single or three-phase powered industrial Gearmotor.

Simplicity and flexibility The innovative pump head has been field-proven on many successful installations of the more sophisticated, programmable Vantage 5000 dosing pump. Verderflex’s engineers have developed the Rapide 5000 peristaltic pump for users who require a simpler pump design with no local controls, or a pump that does not need a costly, external air supply.

The new Verderflex Rapide 5000 is ideal as a stand-alone single or double head pump or integrated into a system.

This lubricant-free peristaltic pump can run dry without pump damage as, with the tube's powerful recovery, it has excellent dry priming and viscous product pumping capabilities. The pump is especially suitable to dose and transfers abrasive and corrosive liquids such as chemical additives, inks, paints and off-gassing liquids.

Like all peristaltic pumps, the Rapide 5000's gentle, lowshear working principle produces less foaming than other pump technologies improving delivered product quality and lowering reject rates. Additionally, the pump head 12

Pipes, Pumps and Valves Africa - Mar/Apr 2020

has a higher flow per revolution than other comparable peristaltic pumps and with fewer tube compressions for a given pumped liquid volume produces a longer tube life.

Tradition of excellence As a family-owned and run business, the Verder Group has a longstanding history of focus on innovation and technology. Its growth is centred on strategic acquisitions of like-minded pump equipment manufacturers whose philosophy and products are in keeping with this focus and the Group's core values – as well as ongoing investment in its research and development (R&D) as the Group continues its tradition of technical excellence.

“The Verder promise is to find innovative solutions to existing problems as well as to anticipate the problems and needs of the future – and the Group achieves this by delivering on high quality solutions that are fit-forpurpose. We are very excited by this new product and the application capability it will deliver for our clients across Africa,” said Darryl Macdougall, Managing Director, Verder Pumps South Africa.

Verder Pumps South Africa, +27 (0) 11 704 7500, kirstin.adam@verder.co.za, www.verderliquids.com/za

Pump restarts successfully after a closed period One of South Africa’s largest independent polyurethane and plastic foam manufacturers restarted an important gear pump, used to pump glue to rebound foam chips, without difficulty.

Because the gear pump pumps viscous adhesive liquid at one of the company’s two-chip plants, pumps can fail to restart if parts are immobilised by glue after a long period of inactivity.

PUMPS

However, with the introduction of Vesconite Hilube polymer bushings in the well-known Viking internal gear pump, the company’s pump restarted with ease.

Not only that, the Vesconite Hilube pump bushings, which were inspected at the time of the restart, showed no wear.

The foam manufacturer service manager notes that the self-lubricating hard-wearing Vesconite Hilube polymer bushings replaced carbon graphite ones, which had tended to crack in the warm operating environment, in which the viscous glue-like chemicals needed to be heated to be applied to the foam chips.

This did not occur with the Vesconite Hilube, which had the added advantage of being self-lubricating and being able to move in the high-friction environment.

“You can’t use an ordinary plastic bush,” says the service manager.

“The gum dries out and sticks to the bush if you try.

After the December break and after long weekends, the gear pumps ceased to operate before we used Vesconite Hilube.”

The company manufacturers 800 tons per year of chip mattress blocks.

These are used for mattresses, bus seats, gymnasium mats, restaurant seats and in other high-density furniture and bedding applications.

The service manager says that the Vesconite Hilube bushing has lasted seven months, and is pleased that it has survived and continued to operate after the holiday period.

IPT Strip Ad.indd 1

The Vesconite Hilube bushing inside the gear pump casing He has installed Vesconite Hilube bushings on several gear pumps at the factory, including several pumps where temperatures can reach 65°C. He believes that this is a low-maintenance solution for a challenging operating environment.

Vesconite, Phillip de Villiers, +27 (0) 11 616 1111, phillip@vesconite.com

2019/12/05 15:04:44

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PUMPS

Atlas Copco’s PAS range – a prime example of unmatched pump efficiency In today’s challenging economy, low operating costs and high productivity are essential for business sustainability, the pump industry certainly being no exception.

As a global leader in sustainable productivity solutions, Atlas Copco is focused on developing efficient, high-performance products in a compact, portable, versatile, durable, and easy-to-service package, a strategy that perfectly aligns to the pump industry.

“Our PAS fully automatic dry self-priming centrifugal open-frame pump range serves as a prime example of our commitment to developing smaller, lighter products that are easy to use, move and maintain with an emphasis on versatility to ensure the best solution for dewatering applications,” says Power Technique Business Line Manager, David Stanford. “These efficient highperformance fit-for-purpose pump systems are designed to augment our customers’ businesses while also being considerate to the environment.”

Suitable for transporting or raising water with abrasive solids in suspension, the PAS diesel pump range comprises four high flow (HF) and five medium flow (MF) models delivering a maximum flow capacity of 2100 m3/h, with a maximum head of 75 m and an outlet size of 100 – 300 mm.

The robust PAS pump systems are specially designed and engineered to deliver reliable operation in stringent conditions where a start-up can often be a challenge.

The pump’s dry prime capabilities allow the end-user to start pumping immediately with a simple flip of the switch. The PAS pump system is equipped with a highcapacity diaphragm pump for automatic priming; the large SuperDuo separator separates the air in the pump from the liquid which is then sucked by the vacuum pump, making automatic priming possible.

These pumps can work with clean or dirty water and can handle trash and fibrous materials with ease. The inclusion of a centrifugal pump with a semi-open impeller and an abrasion-resistant pump casting ensures an excellent solids handling capability; the system can pump liquids with solids of up to 100 mm in suspension without the risk of clogging.

The PAS range, which is also available in a canopy version, has been tested and verified under the most stringent conditions for reliable performance over a long life span.

The robust pumps are suitable for multiple applications typically found in the construction, mining and municipal sectors including general dewatering, wellpoint, floodwater clean-up, stream diversions, sewage bypass and reservoir, pond and canal drainage.

“Efficiency,” says Stanford, “is one of the most essential components for the lowest total cost of ownership.

“Featuring a high-efficiency hydraulic end, our pumps consume very little fuel irrespective of the operating 14

Pipes, Pumps and Valves Africa - Mar/Apr 2020

conditions.” In terms of versatility, the modular design means that one pump is capable of covering multiple requirements. Compact dimensions coupled with a lightweight facilitate manoeuvrability, keeping downtime to a minimum. “Requiring fewer pumps and increasing productivity contribute positively to the customer’s bottom line,” notes Stanford.

Atlas Copco also offers a number of service packs including Preventive Maintenance Kits, Wear Part Kits, Seal Kits and Gasket or O-Ring kit. Atlas Copco’s high-performance longlasting lubricants are specially engineered to match pump maintenance specifications and provide optimal pump protection.

PUMPS

“Service is another valuable contributor to a customer’s profitability,” continues Stanford. “Performed regularly by trained technicians using OEM parts maximises uptime, service will extend the pump system’s life cycle and reduce maintenance costs, all factors that are fundamental to operational efficiency.” The PAS range is fitted with a hinged cover that provides fast easy, access to components, enabling a three minute clean up and restart.

Atlas Copco also supplies a range of VAR wet self-priming centrifugal pumps available in open-frame and canopy versions. Encompassing eleven models, this range features outlet sizes of 40 to 300 mm, a maximum head of 58 m with a maximum flow of 1400 m3/h.

Atlas Copco, +27 (0) 11 821 9800, www.atlascopco.com

BMG-FT08112019 - P&V Friday, 08 November 2019 2:46:17 PM

Pipes, Pumps and Valves Africa - Mar/Apr 2020

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Environmental protection a bonus with IPR’s SlurrySucker®

PUMPS

The need to incorporate environmental preservation techniques on site has become an ongoing and critical action point for the global mining and industrial sectors. Ensuring water contaminated spaces do not negatively affect surrounding areas is one such area where slurry and dewatering pump specialist Integrated Pump Rental can assist through its SlurrySucker® slurry removal solution.

Not only does Integrated Pump Rentals’ SlurrySucker® dredging system effectively clean process water ponds, return water dams or other water storage areas, but it has also become recognised as an ideal solution for cleaning water capture areas where silt or slimes is an issue or where water retention and water holding capacity is being threatened. Some of these areas are environmentally sensitive and must be protected from causing any pollution. “Through our SlurrySucker® product range, we are now able to offer a complete solution to effectively remove slurry from any water-based environment and in so doing now offer one of the most cost-effective solutions for any dam cleaning project,” says Lee Vine, managing director for Integrated Pump Rental.

The benefits of the SlurrySucker® extend well beyond improving mines’ environmental footprints. They enable increased water storage, the recovery of minerals and improved processing water quality.

“They further make it significantly easier to extend the life of water-dedicated assets by for example protecting dam plastic liners. Clients are consequently able to incorporate slurry removal projects into their planning to extract greater value from all non-mining areas,” Vine outlines.

Lee Vine, managing director of Integrated Pump Rental, flanks the company's SlurrySucker.

The SlurrySucker® dredge system incorporates worldrenowned Grindex slurry pumps, making it the most efficient and cost-effective electrically powered floating dredge system designed on the market.

Bodies of water, such as ponds, lagoons, dams and canals should be considered valuable plant assets and must be

The SlurrySucker has an established reputation for cost-effective dam cleaning.

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Pipes, Pumps and Valves Africa - Mar/Apr 2020

maintained to maximise their operational efficiency and contribution to optimised operational performance and the SlurrySucker® will deliver in this area without fail,” Vine confirms.

The SlurrySucker® is sized to meet the clients’ slurry removal requirements in terms of particle size, aggregation, distribution, cohesiveness, flow characteristics, sedimentation rates and specific gravity.

Typical suction water agitation dredging usually achieves 20% - 30% solids for SGs up to 3.0.

Vine highlights two product options – the Maxi SlurrySucker® which is capable of moving 250 m³ an hour at 20% - 30% by volume – equivalent of approximately 70 dry tons per hour. The Mini SlurrySucker® operates at 100 m³ an hour, again at 20% - 30% by volume for roughly 30 dry tons every hour.

The SlurrySucker dredging system effectively cleans process water ponds.

Whether it is short-term pond clean-ups or ongoing pond management projects, the SlurrySucker® is designed for difficult site conditions for many applications including: • Mining – Process ponds, pits, tailings storage • Energy – Power stations, oil refineries • Industry – Chemical storage ponds • Stormwater – Sedimentation dams “We believe the SlurrySucker® is the easiest method of dredging thanks to remote-controlled height adjustment of the primary slurry pump and dredge head assembly,” says Vine.

The SlurrySucker® comes standard with the galvanised frame structure and Integrated Pump Rental’s flexible design provides the optionality for stainless steel with polyethene and UV-stabilised pontoons.

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

Xylem Africa implements pandemic risk reduction plan Xylem Africa, a leader in developing innovative water solutions through smart technology, has implemented a Pandemic Risk Reduction Plan to minimise any risk to its employees, partners and customers during the coronavirus pandemic.

The plan will be applied at all Xylem facilities within affected countries and will focus on four phases prevention, preparedness, response and recovery.

Although there are no confirmed cases of COVID-19 among its staff in Africa, Xylem Africa is taking precautions to mitigate any impact and, of primary importance, to safeguard the health of Xylem’s employees, families, and their local communities.

According to Chetan Mistry, Strategy & Marketing Manager at Xylem Africa: “The World Health Organisation has officially declared that COVID-19 is a public health emergency of international concern. We recognise our duty of care to our customers, employees, and partners, and are putting comprehensive measures in place to protect health and safety, and to provide a safe place to work.”

Xylem aims to safeguard both its workforce and partners, as well as its supply chain. To achieve these goals, Xylem and Xylem Africa are implementing a package of steps, including the following: ● Activation of Xylem’s Pandemic Risk Mitigation Plan. ● Restricted worldwide travel of all kinds, based on WHO and local health authority guidelines. ● 14-day self-quarantine and remote-work for anyone who has recently travelled in areas of concern. ● Providing employees with guidance on effective infection control. ● Supplying Xylem Africa offices with necessary preventative materials such as heat sensors, masks, personal protective equipment, sanitiser, and such, in line with best practice infection control protocols. ● All Xylem buildings will be sprayed regularly with a disinfectant spray, in a “Deep clean” measure similar to specific international flights. ● All ongoing Xylem events are currently being risk assessed and will be postponed where appropriate and possible. There will be direct communication to all stakeholder regarding each specific event. ● All Xylem employees and partners are encouraged to follow hygiene guidelines and further reduce the risk of infections. ● Any potential worksite contamination events are addressed through immediate response protocols, including disinfection and as appropriate work-from-home and quarantine protocols. ● Employees are encouraged to adopt general precautions, such as staying home if they feel sick. ● The above steps will be reviewed and updated 18

Pipes, Pumps and Valves Africa - Mar/Apr 2020

with reference to guidelines set by the World Health Organisation (WHO) and local health authorities. Although no Xylem employee has been infected by COVID-19, any such occurrence will be announced.

With Xylem’s Business Continuity Plans in place, there is no immediate impact on services and products to its customers. However, given the rapidly changing nature of this pandemic, Xylem will communicate any such changes.

Xylem Africa is implementing steps to help ensure a stable flow of service delivery and availability: ● Xylem is working closely with its supply base to minimise impacts, ensuring they have appropriate business continuity actions in place. This includes suppliers of both physical components and services, including critical infrastructure providers. ● Xylem’s global manufacturing facilities have activated business continuity plans designed to minimise any impact. ● Stock reserves have been increased to further ensure customer service. ● A Work From Home policy is being prepared and will be implemented if this becomes necessary “The new plans aren’t aimed at replacing any existing continuity plan, but rather to supplement it,” Mistry explained. “This bridges the gap between our traditional, all-hazards continuity planning and the specialised continuity planning needed in this instance. They address the additional considerations, challenges and elements specific to the nature of this pandemic. We can’t stress enough that all these measures are precautionary. We are taking them in a calm and considered way, mindful of the appropriate measures and timing for these. Xylem will continue to follow the guidelines and advice from the WHO and local health authorities. If the threat becomes more prevalent, we will escalate our efforts to ensure the safety of our employees and customers.”

Xylem encourages all its stakeholders to cooperate with the measure in place, for the safety of all concerned. Its global response is superseded in affected areas by the most stringent guidance from local and international health agencies. Xylem Africa’s priorities are to safeguard and support its employees, customers and partners, and to limit the impact of COVID-19 on its operations responsibly and proactively.

Xylem, Chetan Mistry +27 11 966 9311 Chetan.Mistry@Xyleminc.com

Solutions for manufacturing diaphragm globe valves GEMÜ diaphragm globe valves can be integrated into multi-port valve blocks made from stainless steel.

With immediate effect, the valve specialist GEMÜ offers solutions for manufacturing diaphragm globe valves with PD design (Plug Diaphragm) as multi-port valve blocks made from stainless steel in a reliable process.

VALVES

The focus is on the requirements for "hygienic design" and cost-effective process-optimized manufacture. It is possible with immediate effect to configure multi-port valves with diaphragm globe valves on a case by case basis according to customer requirements. For instance, multi-port valve blocks with the control valve GEMÜ 567 BioStar control have already been designed for aseptic dosing from an ultra-pure water loop. Another example are filling blocks with the GEMÜ F40 and GEMÜ F60 filling valves, developed in combination with auxiliary valves as a complete solution for gas control.

The integration of diaphragm globe valves in multi-port valve blocks combines the advantages of a valve block with those of PD design. This opens the door to new opportunities for plant operators, which GEMÜ can implement according to custom requirements.

GEMÜ, +27 (0) 11 462 7795, viki.besselaar@gemu.co.za, www.gemu-group.com

The multi-port valve block made from stainless steel with the control valve GEMÜ 567 BioStar control and diaphragm valves GEMÜ 650 BioStar for dosing from a sterile loop and distribution across several outlets.

Pipes, Pumps and Valves Africa - Mar/Apr 2020

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Saving energy one valve at a time VALVES

Considering the huge amount of energy required to move water, it is no surprise that energy efficiency remains one of the hottest topics in the pump and valve sector.

Delivering solutions that save on energy usage remains the focus of much original equipment manufacturer's research and development departments. Pipes, Pumps & Valves Africa looks at one such development from A.R.I. When the research team at A.R.I first looked at the energy savings being achieved with their solution for trapped air pockets in pipes, many thought some serious mistakes had been made and the calculations were out. This, however, was not the case. Instead, they had developed a fantastic solution for energy saving.

There is no easy way to move water. It comes at a huge energy cost. The US Department of Energy estimates that pumps represent anything from 25 to 50% of the electricity used by industrial systems. Pumping systems account for nearly 20% of the worlds electrical energy demand and pumps are considered, the world over, the single largest user of electricity within Industry across the European Union.

To test the efficiency of its air valves A.R.D developed a demonstration model that registers and displays the differences between energy consumption on a line where the automatic air valves are clogged or nonexistent as well as on a line where air valves are installed using special orifices developed by A.R.I. A comparison of the two proved the major energy efficiency saved putting moot to any arguments that calculation mistakes may have been made.

Demonstration model explained In all liquid transmission lines, air pockets accumulate on the downslopes of the pipes. There is no way to stop this as these air pockets are created naturally by the tendency of air to go up against the flow of the water.

Typically the air pockets narrow the diameter of the pipe resulting in pumps having to work much harder to move the same amount of liquid over the same distance in the same amount of time.

And when pumps work harder they use more electricity and increasing the energy consumption of a facility significantly.

Installing automatic air valves along the pipeline allows one to release the air from the water reducing the facility’s energy consumption.

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that can change the number of cycles per minute. The flow meter is connected to a computerized controller that increases or decreases the pump’s number of cycles per minute thereby controlling the flow at a fixed rate during the entire demonstration. The readout of the flow energy and pump cycle are available to view in real-time on the monitoring screen connected to the system.

In the first phase of the test, water flows into the pipes with the air valves closed. Onlookers can immediately see the air pockets (clear pipes are used in the model) trapped within. The pipes are purposefully displayed in a W shape to simulate outside field conditions where water lines are laid on sloping terrain.

According to the A.R.I team the demonstration model was built and developed to showcase this saving.

The model clearly demonstrates that to generate a flow of 17.1 litres per minute, the pump motor must run at around 555 RPM which consumes energy at the rate of 9.2 W per hour.

The model is essentially a closed system where water from a storage tank is pumped through a system of pipes back into the tank. The main idea of the system is really to produce a fixed flow. This is done using a variable pump

In the second part of the demonstration, the air valves are opened and the trapped air in the system is released.

Immediately one notices how the pipes fill completely with water unlike before.

Pipes, Pumps and Valves Africa - Mar/Apr 2020

VSA

GROUP (PTY) LTD

YOUR PVF PARTNER

Changing the current supplied to the motor in order to maintain the flow rate of 17,1 litres per minute the model demonstrates that in order to produce this rate the pump now only needs to run at 480 RPM at a reduced energy rate of only 7,4 W per hour.

This is a remarkable energy saving of about 20%.

Considering the scale of national water distribution networks the savings run into millions.

Delivering results In today’s world, where energy conservation has become a global mission and where millions of cubic meters of water are transmitted on a daily basis, reliable automatic air valves become powerful tools to deliver much larger savings in energy and money.

For the A.R.I team there is no doubt that air valves are the most efficient and cost-effective tool or protection against pressure transient events regardless of what challenging field environment one is dealing with.

More so, says the company, identifying approaches to integrate energy-saving practices into the long-term sustainability of water and wastewater infrastructure is t a key element to reducing operation costs and adding to water utilities, in particular, bottom line.

A.R.I, limor.miller@ari.co.il, www.arivalves.com

.

Telephone : +27 (0) 11 680 2005 Email : sales@lvsa.co.za

Swing check valves - A first for RGR Technologies VALVES

RGR Technologies have successfully designed, developed, manufactured and tested 80NB Class 600 and 500NB Class 900 swing check valves for the oil and gas industry adding a new product to our extensive product range.

A prototype swing check valve was built and extensively researched and developed resulting in the successful manufacture of 80 NB class 600 and 500 NB class 900 swing check valves. The swing check valves have been designed to comply with API 6D and API 594. The design includes fire safe seals which were tested by API 6FD and API 607.

The fire testing results proved the design was ready for the Oil and Gas industry ensuring the design would operate safely. RGR Technologies prides itself in performing its research and development which includes special design verification tests to ensure a product meets our customer's needs.

Both sizes were made of cast ASTM A216 WCC material and were sourced locally from foundries used by RGR Technologies. The castings were produced under strict quality requirements that included EN ISO 10204 3.2 certifications, radiographic examination, product analysis, magnetic particle examination, tensile and impact testing to all casting ensuring the material met all the customer requirements.

RGR Technologies made use of sub-contractors to assist with the machining of the large, 2.9-ton bodies. The other items were machined in house using manual and CNC machines. We were able to ensure complete traceability of all materials throughout the manufacturing process and our quality controller thoroughly inspected each component to the manufacturing drawings created by RGR Technologies engineering department.

The valves were tested following API 6D and achieved a zero visible leakage. The testing was witnessed by a thirdparty inspector as per the request of the customer and to ensure we complied to the PER and SANS 347.

The customer required a high-quality coating for the coastal environment where these valves would be installed.

RGR Technologies identified a painting sub-contractor with

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Pipes, Pumps and Valves Africa - Mar/Apr 2020

the correct facilities to perform the coating application and developed them further to meet the coating requirements of the customer's specification. We were happy with the results and the development of the subcontractor proved to be a success.

The new product was developed out of the requirements of the customer for a high-quality valve to meet their specifications, international specifications and to meet the local content. We are proud to say we have met all these requirements and deem this project a success!

RGR Technologies, +27 (0) 11 882 8030, www.rgrtech.co.za

Tried and tested and versatile – GEMÜ 1436 cPos with new Profinet fieldbus interface GEMÜ is now expanding its tried and tested GEMÜ 1436 cPos positioner to include additional options in fieldbus environments.

VALVES

With the new Profinet fieldbus interface, the GEMÜ 1436 cPos positioner achieves a transmission rate up to 8 x higher. However, the option to perform all setting options easily via the fieldbus interface instead of having to enter these locally on the operating unit remains unchanged.

In this way, the process data for controlling the valve position is also transmitted digitally. The new fieldbus type with Profinet also offers other practical benefits for the user, such as a more stable connection and additional configuration options.

In addition to the “standard” versions with analogue signals (0/4…20 mA) and the already available DeviceNet versions and Profibus DP, the electro-pneumatic positioner is now also available with Profinet, the industrial Ethernet standard, which will increasingly become the established standard shortly in the automation sector.

GEMÜ is, therefore, expanding its product range in the area of positioners for pneumatically operated equipment.

To achieve the widest range of control tasks, the valve specialist now offers a complete product range of positioners.

In doing so, the individual series each have specific features and characteristics whereby a balance must always be struck between wide-ranging functionality and cost/ benefits.

Intelligent positioner and integrated process controller GEMÜ 1436 cPos GEMÜ, +27 (0) 11 462 7795, viki.besselaar@gemu.co.za, www.gemu-group.com

CONTROL VALVE SUPPLY AND REPAIR SOLUTIONS

Enserve Group Official Sub-Saharan Africa distributor for: Enserve Engineering Services (Pty) Ltd

+27 (0) 16 971 3885

mail@enserve.co.za

www.enserveonline.com

Pipes, Pumps and Valves Africa - Mar/Apr 2020

23

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Your service partner Delivering solutions customized to your needs and achieving service and product excellence through innovation

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• Rapid turnaround to minimize disruption and keep your projects on schedule • Delivery of outstanding service solutions which can be implemented at any time to increase reliability and availability of your equipment

Service partner • Find the right solutions together with our dedicated service teams • Sulzer is at your side during each phase of the project to develop the best solution to your needs • We measure our performance in your success and in long-term customer relationships

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Turbomachinery • Advanced gas turbines • Mature gas turbines • Utility steam turbines • Industrial steam turbines • Ancillary turbines • Centrifugal compressors • Axial compressors • Screw compressors • Reciprocating compressors • Hot gas expanders Electromechanical equipment • Air-cooled generators • Hydrogen-cooled generators • AC/DC motors • LV/HV motors • Permanent magnet motors • Servo motors • Alternators • Transformers • Gearboxes • Electro-magnetic brakes • Variable frequency drives • Controls • Wind turbine generators • Rail specific equipment • Mining specific equipment • Marine specific equipment

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Pumps • Axially split pumps • Barrel casing pumps • Medium consistency products • Multiphase pumps • Ring section pumps • Single stage pumps • Submersible pumps • Two stage pumps • Vertical pumps

Solutions available whenever and wherever needed from one access point www.sulzer.com Sulzer Pumps (South Africa) (Pty) LTD www.sulzer.com E10513 en 3.2018, Copyright © Sulzer Ltd 2018 9 Gerhardus Road This brochure is a general product presentation. It does not provide a warranty or guarantee of any kind. Please, contact us for a description of the warranties and guarantees offered with our products. Directions for use and safety will be given separately. All information herein is subject to change without notice.

Elandsfontein 1406

Most common ways water is wasted

PIPES

South Africa is among the more water-stressed countries in the world. It has abundant water resources in some areas, but many parts receive rainfalls well below average.

Several of SA’s largest and most productive cities are in such zones - this was made very apparent through the recent drought in the Western Cape and ongoing droughts in other areas. Xylem, a leader in developing innovative water solutions through smart technology, works to help countries and communities secure and manage their water supplies. Xylem South Africa is en-gaged in projects across the country and the African continent. We help our customers transport, treat, test and efficiently use water in public utility, residential, commercial, agricultural, mining and industrial settings.

As part of this goal, it is important to highlight how water is often wasted. While Xylem is produc-ing sophisticated solutions for improved water management, the biggest gains manifest when people understand how they can help reduce water wastage.“Water has become a modern convenience for many, so we sometimes don’t appreciate what it takes to get such a precious resource into pipes and out of taps,” said Chetan Mistry, Strategy and Marketing Manager for Xylem Africa. “A little insight can go a long way, not only to build better water-saving habits but also to make the right choices on how to better manage water and water infrastructure.”

To help encourage discussion and enlightenment on water management, here are several ways through which water is often wasted at a country and community level:

Ageing infrastructure Piping water from the source to consumers is one of civilisation's most ingenious inventions, from the Roman Aqueducts to the Lesotho Highlands Water Project. But these systems require infrastructure to stay in good shape.

The South African government appreciates the importance of such maintenance.

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Pipes, Pumps and Valves Africa - Mar/Apr 2020

It has earmarked R900 billion rand ($61 billion) over the next decade to improve its water-supply and storage infrastructure. The Department of Water Affairs estimated that more than one-third of available water is lost due to leaking pipes, ageing and broken infra-structure, vandalism and contamination. Well-maintained water infrastructure can realise enor-mous savings for the resource and fiscus.

Poor water management Human expansion has dramatically disrupted the availability of water. An estimated 1.4 billion people live in closed basins - rivers that no longer reach the ocean, often due to human activities. The overallocation of river flows has resulted in many different problems, including overdrawn groundwater aquifers - the vital feeders of many surface water systems. Significant numbers of water bodies are polluted, from estuaries to coastal zones and even the oceans themselves. Much of this was done to satisfy short-term economic goals, but the long-term consequences may very well undo all those gains. All these aspects must be managed, treating water sources as strategic assets to help countries prosper. They are not inexhaustible - proper management will deliver greater availability.

Insufficient use of water data Human population sizes tripled during the 20th century, and water for human purposes grew six-fold. That doesn’t include industrial and other applications of water. As urbanisation increases our thirst, it’s vital to understand the picture on the ground to plan ahead. The key to unlocking this is usage data. While infrastructure can be modernised to improve data, most utilities already have SCADA systems that produce large amounts of data.

They just often do nothing with it. This means there is a

stockpile of insight that could be exploited now to make gains for water. In some cases, utilities found they needed no new investments in infrastructure once they could act on the pictures created by their data. Data is perhaps the most overlooked and underused meth-od to address largescale water shortages and wastage.

Little recycling of water Water recycling already happens - our modern communities could not survive without doing so. Countless litres are recycled every year from different sources, ranging from risky greywater to dangerous blackwater. But despite these efforts, not enough is being done to reclaim more. For example, Xylem recently participated in a project that helped a prominent local mine extract nickel from its chemical wastewater, establishing a new revenue stream for the mine and re-claiming water. There are many more opportunities to recycle wastewater and chemical water, and the world may have become a bit too complacent with its current recycling activities. We’re off to a good start, but more can be achieved in this area.

Outdated irrigation and farming techniques South Africa has a very prominent agriculture sector, and it’s often at the leading edge of new farming techniques and technologies. Yet more gains can be made by focusing attention on irri-gation and farming techniques. Flood irrigation is a common technique to nourish crops, but it wastes water and can pollute waterways with fertilisers.

The wrong crop choices can also have a major impact on water usage. Remedies to improve these vary, and their usefulness depends on the context of the region. Examples include drip irrigation and covering crops to prevent water evaporation. Irrigation only feeds around 25-30% of South African crops, the rest being support-ed by rainfall. There is a significant opportunity to improve farming techniques and save water at the same time.

Xylem, +27 (0) 11 966 9300, www.xylem.com

INDUSTRY NEWS

BMG providing critical engineering support during COVID-19 lockdown BMG – one of South Africa’s leading engineering solutions specialists - has been authorised to provide engineering components and support services to businesses approved as ‘essential service’ providers, during the country’s COVID-19 lockdown period.

“As a customer-driven business, the BMG team remains committed to making sure the industry can continue operating as efficiently and as safely as possible during this difficult time. We are pleased to have been permitted the Companies and Intellectual Property Commission (CIPC) to provide crucial engineering components and support, ensuring continuous operation of services throughout the country,” explains Darryn Wright, Group Marketing Executive, Engineering Solutions Group (ESG) part of Invicta Holdings Limited. “We are determined to keep the wheels of industry turning and to help the people of our country, by providing critical engineering components.

“The team is on hand to assist essential service customers in many sectors, including food and beverage plants, water and wastewater treatment facilities, coal mines and petrochemical plants. We also work closely with service providers to power generation and pharmaceutical plants, as well as in agriculture, ports, rail and road facilities.

“BMG’s distribution centre in Droste Park, Johannesburg, is fully-stocked to help and support customers around the country and into Africa, for essential equipment and components. Our brave and committed technical support

and field service teams are also on hand to assist our essential service customers in any way we can.”

Essential service providers requiring assistance are invited to contact BMG at this emergency number 0800022224.

BMG World, +27 11 620 1516, darrynw@bmgworld.net, www.bmgworld.net

Caminex 2020 postponed The Copperbelt Agricultural & Commercial Show Society the organisers of CAMINEX 2020 (Copperbelt Agricultural Mining Industrial Networking Expo) regret to inform all its Partners, Exhibitors, Sponsors and both Foreign & Local visitors of the Postponement of CAMINEX 2020 which was scheduled to be held from the 2nd to 4th June 2020.

option but to postpone CAMINEX 2020 to the new dates set at 1st – 3rd June 2021.

The Show Society Board believes that by moving the date by one calendar year, will enable everyone time to settle and prepare for CAMINEX in 2021. The Show Society will hold and honour all payments already made for 2020 in 2021 without any price (or inflationary) adjustments.

This postponement is in line with the directive from The Copperbelt Agricultural & Commercial Show Society the Minister of Agriculture with regards to holding (CACSS) will respond to whatever procedures that are in Agricultural Shows and also the Government’s guidelines place locally and globally and as directed nationally and on the COVID-19 Pandemic. by the World Health Organisation. We are committed to CAMINEX is an important event for the Copperbelt of protecting our staff, exhibitors, visitors, suppliers and all Zambia and brings together a number of local, regional stakeholders. and foreign exhibitors and visitors. In light of the spread Karen O’Neil, globally of the COVID–19 Pandemic, we believe that in +260-966-783075, the interest and safety of all our partners, we have no karen.oneil@cacss.co.zm

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Pipes, Pumps and Valves Africa - Mar/Apr 2020

The ROBUSCHI RBS range of low-pulse, tri-lobe blowers & exhausters with pressures up to 1bar & vacuum levels to -500mbar.

Flow rates from 240m3/hr up to 10,400m3/hr.

Instruvac (a division of Air & Vacuum Technologies (Pty) Ltd.) is an official distributor for Robuschi liquid ring vacuum pumps as well as roots blowers & blower packages – all made in Italy.

PeriBest Peristaltic pumps offer extremely heavy duty design for the most demanding applications up to 10 bar. and the latest technology peristaltic hose with XXL roller technology. PeriBest’s ease of assembly, operation and maintenance saves on costs and downtime.

A&VT = ADDING VALUE TOGETHER

info@vactech.co.za

0861 VACTEC (822 832)

www.vactech.co.za

INDUSTRY NEWS

Environmental emergencies as a consequence of COVID-19 The National Environmental Management Act, 1998 (NEMA) defines an “emergency” as one that has arisen suddenly that poses an imminent and serious threat to the environment, human life or property, including a ‘disaster’ as defined in section 1 of the Disaster Management Act, 2002 (DMA).

The COVID-19 pandemic has been classified and declared as a disaster under the DMA. The immediate consequences of this is that the environmental Ministries are afforded a host of overriding powers in ensuring emergencies are adequately dealt with and the safety of humans, property and/or the environment protected.

Infrastructure development under NEMA In terms of section 30A, the Minister of Environment, Forestry and Fisheries (Environment Minister) and Provincial Authorities may, on their initiative or request, issue a verbal or written directive to carry out activities without obtaining an environmental authorisation to contain or mitigate the effects of an emergency.

This could be used to build emergency infrastructure projects to help curb the effects of COVID-19. Temporary hospitals, water treatment facilities, cemeteries and waste management facilities may all need to be established, by Government and potentially by the private sector (remote mines, for example). In many instances, these projects would typically require environmental authorisations which would delay the projects.

Water use licensing under the National Water Act, 1998 Section 67 permits, in an emergency, or cases of extreme urgency, the Minister of Human Settlements, Water and

Paula-Ann Novotny Sanitation (Water Minister) to dispense with various water use licensing requirements and procedures. The Water Minister could rely on these powers to permit water projects to proceed without having to obtain a water use licence.

This could be used to ensure that affected communities, hospitals, clinics etc. are provided with emergency water services to allow communities to wash their hands and medical professionals to do their work. Water services can be provided through boreholes and containerised water treatment facilities.

Provision of water services under the Water Services Act, 1997 Typically, the provision of water services falls within the mandate of the local municipalities, i.e. the defined water services authorities in the relevant jurisdiction. Approvals for alternative water services, supplied by parties other than the local municipality, are difficult to obtain. However, in emergencies, the Water Minister has overriding powers to provide water services (i.e. water supply services and sanitation services).

National Government may need to be called on to exercise these powers to assist municipalities.

Garyn Rapson 30

Pipes, Pumps and Valves Africa - Mar/Apr 2020

Webber Wentzel will continue to monitor the developments of the COVID-19 disaster and its implications on environmental regulation, and will keep you apprised of all new material developments.

Pumps that solve problems Accurate, versatile chemical pumps Cut chemical costs through higher accuracy metering Simple drop-in installation eliminates ancillary equipment Flow rates from 0.1 to 2000 ml/min and up to 7 bar Fully sealed for life, one minute tool-free maintenance REVOLUTIONARY PERISTALTIC PUMPHEAD

Heavy duty pumps for abrasive slurries Pumps with no seals or valves to wear, clog or leak, up to 100 cubic metre/hr to 16 bar Minimal maintenance - just change the hose Suction lift capability to 9.5 metres, self-priming and dry running Ideal for abrasive products, high viscosities and shear sensitive fluids

watson-marlow.com/za-en info.za@wmftg.com

JOHANNESBURG: Tel: +27 11 796 2960 RUSTENBURG: Tel: +27 14 592 0919 CAPE TOWN: Tel: +27 82 776 2872 LIMPOPO : Tel: +27 82 896 9936

PRODUCTS & SERVICES

Manufacturers need to move water security to the top of their priority list A lack of a consistent and reliable water supply is having a big impact on the growth and profitability on many businesses in South Africa – particularly those in the manufacturing sector – and these businesses need to act swiftly to implement measures and solutions that are going to mitigate water security risk and better prepare them for an uncertain future.

According to the World Bank, with roughly 663 million people lacking access to drinking water and 2.4 billion people worldwide still lacking access to sanitation, water security is still considered to be one of the biggest global risks.

But, it’s not just individuals who are suffering.

Heiner Freese, Chief Operating and Financial Officer at SBS Tanks note that here in South Africa, water security has become an ever-increasing business objective and a concern for every citizen, as our climate continues to change and continued water supply challenges at municipal level become ever more evident.

No surprise, then, that across a variety of environments, including those in which SBS Tanks specialises, such as mining, fire protection, municipal, manufacturing, food and beverage, healthcare, hospitality and property development and management, there has become a greater need to mitigate the risks associated with water security.

This has been driven home by the fact that South Africa has a growing population and a developing economy currently under financial pressure, and these factors can only increase the pressure on the country’s water supply system, which, in turn, is already suffering from years of neglect and poor maintenance.

As a result, many businesses should be – and some already are - looking at creating their water supply to avoid disaster and take control of their destiny, rather than rely on the traditional water authorities to supply water.

Additionally, the cost of water has increased drastically and will continue to do so, making the collection of rainwater and the harvesting of water from unused resources just a couple of examples of where the return on the investment in water storage solutions can start to make economic sense while providing continued supply that may otherwise not be guaranteed.

Nearly all industries require water, even if it is just drinking water for employees. Liquid storage tanks are a safe way to store water and if one looks at the water provision process, tanks are a common occurrence in any system, from extraction from rivers right through to storing wastewater for recycling.

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Further, process water - water that cannot be classified as drinking water and is used in connection with technical plants and processes in production companies - is an important ingredient in many products, with water also often used in the cooling process of many manufacturing plants, such as the cooling of furnaces in steel manufacturing.

It is here, within non-food manufacturing environments, notes Freese, that mitigating water security issues is crucial and becomes a safety concern. In these areas it is highly likely that a furnace for instance, that does not have sufficient water for cooling could explode, threatening life and property.

Taking that thought a step further, fire is a threat that affects all businesses and it is becoming more common in new developments of both warehousing and residential accommodation that insurers require property owners to provide for and install sprinkler systems and standby water tanks.

Throw in the fact that in South Africa we are starting to hear more and more about 'water-shedding' – as opposed to loading shedding – and you have a scenario that requires responsible businesses to build in contingencies, such as the installation of water tanks, which can mitigate the risks of low water pressure, water-shedding, or even no water being provided through the municipal water system.

SBS® Water Systems, +27 (0) 86 048 2657, water@sbstanks.co.za, www.sbstanks.com

The installation of Vesconite Hilube polymer wear rings can result in electricity savings that more than pay for the wear ring.

This was the result of a study by a large pump original equipment manufacturer (OEM) that compared energy usage on a typical submersible pump when a Vesconite Hilube wear ring was in place and when a stainless steel wear ring had been installed.

Vesconite Hilube is a low-friction wear-resistant polymer.

Wear rings made from the material are designed to seal the pressure leakage of the liquid between the inlet and the impeller and the pump casing and should result in a higher pumping efficiency due to lower by-pass.

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Quick payback on polymer wear rings

Vesconite Bearing technical pump consultant Phillip de Villiers was, therefore, pleased when the pump OEM’s results independently proved Vesconite Hilube’s ability to improve pumping efficiency and decrease electricity usage.

The study showed a 0.11kW/h energy reduction when the operation of the pump with a large diameter stainless steel wear was compared with the operation of the same pump type with a dimensionally-identical Vesconite Hilube wear ring.

The Vesconite Hilube polymer wear rings

Assuming the Vesconite Hilube wear ring’s use on an industrial pump, operating 24 hours a day, 365 days a year, the electricity savings from installing a Vesconite Hilube wear ring add up, particularly when the pump is operated in jurisdictions in which electric charges are high.

generation - which reached 12Gt in 2010 - as well as an awareness that pumps account for 10% of global electrical energy consumption, technological interventions are valued by pump manufacturers and pump users.

In the specific pump that was studied by the OEM, the wear ring would have a three-month payback even where a low electricity cost was assumed, notes De Villiers.

They are also of interest to state and national governments that are interested in reducing carbon emissions to keep global warming under 1.5°C.

He adds that electricity savings for a five-to-ten stage submersible pump can be significant if the electricity savings of each stage are added together.

Vesconite, Phillip de Villiers, +27 (0) 11 616 1111, phillip@vesconite.com

With concerns about global CO2 emissions from electricity

Pipes, Pumps and Valves Africa - Mar/Apr 2020

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PRODUCTS & SERVICES

New additions to OPTIFLEX level transmitter series

KROHNE introduces four new additions to the OPTIFLEX series of guided radar (TDR) level transmitters. Each device is designed for specific areas of application in the Chemical, Oil & Gas, Power, Metals, Minerals & Mining, Pharmaceutical or Food & Beverage industries.

OPTIFLEX series of TDR level transmitters specifically designed for certain areas of application OPTIFLEX 3200 is the first choice for applications with hygienic requirements in the Pharmaceutical and Food & Beverage industries. It features a CIP/SIP-suitable hygienic design for liquid level and interfaces measurement in small vessels with process conditions up to +150°C/ +302°F and 40 barg/ 580 psig. Insensitive to steam, foam and condensation, the device offers a measuring range 0.6…4 m/ 1.97…13.12 ft with an accuracy of ±2 mm/ ±0.08¨.

OPTIFLEX 6200 is designed for solids from granulates to powders in the Chemical, Agri-Food, Metals as well as the Minerals & Mining industries. It can be used for level measurement in silos up to 40 m/ 131 ft with a measuring accuracy of ±2 mm/ ±0.08". Designed to withstand high traction loads and process conditions up to +200°C/ +392°F; 40 barg/ 580 psig, it is insensitive to dusty atmosphere or deposits on the probe.

OPTIFLEX 7200 aims at the Chemical and Oil & Gas industries for level and interface measurement of liquids in process and storage applications with ±2 mm/ ±0.08¨ accuracy. It offers an extensive choice of probes for measuring distances up 60 m/ 197 ft and dielectric constants down to 1.3 (TBF 1.1), and can be used with aggressive media in process conditions up to +250°C/ +482°F and 100 barg/ 1450 psig.

OPTIFLEX 8200 has similar features and offers a double 34

Pipes, Pumps and Valves Africa - Mar/Apr 2020

ceramic process seal system for liquids up to +315°C/ +599°F and 320 barg/ 4641 psig. Both devices offer Dynamic Gas-phase Compensation (DGC) (in preparation) with the coaxial probes, ensuring accurate measurement without increased blocking distance in applications where the composition of the gas above the liquid can change suddenly, e.g. in steam boilers.

All four new TDR transmitters feature 2-wire 4…20 mA HART 7 communication with an optional second output (current or relay) and a real-time clock for event logging.

They have been developed SIL 2/3-compliant according to IEC 61508 for safety-related systems and come with various Ex approvals. Common features also include a quick coupling system as well as compact and remote converter versions (up to 100 m/ 328 ft) made of aluminium or stainless steel. All devices are rated IP66, IP68 and NEMA 4X/6P. Together with the cost-effective OPTIFLEX 1100 for basic liquid applications and the POWERFLEX 2200 for liquids in the nuclear industry, they represent the KROHNE guided radar (TDR) level transmitter portfolio.

KROHNE (Pty) Ltd. +27 (0) 11 314 1391, salesza@krohne.com, https://za.krohne.com/

Pipes, Pumps and Valves Africa - Mar/Apr 2020

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PRODUCTS & SERVICES

Understanding the design features to get the most effective solution 7 Things to know before selecting welded metal bellows seals for your application Welded metal bellow seals are a core sealing technology whose installation has grown dramatically, as use expands to a variety of innovative sealing technologies such as high temperature-, non-contacting gas lubricated- and corrosion-resistant seals. This is especially important in the oil and gas and chemical industries, where pumping liquid from one area to another is complicated by great temperature extremes.

Different factors and product characteristics will impact overall seal effectiveness, and only with an understanding of these differences can plant operators select the most appropriate solution for the application. A welded metal bellows seal is made through a process of stamping disclike plates in specific contoured shapes and welding them in pairs at their inside diameter to form the individual convolutions of the bellows. A series of convolutions are then stacked and welded at the outside diameters to form the bellows capsule. Suitable end-fittings complete the assembly.

The welded metal bellows assembly (Figure 1) performs several functions: • Acts as a spring to keep the primary sealing faces together • Acts as a dynamic seal • Transmits torque from the set screw collar in the seal’s rotating face • Welded bellows have specific advantages, including: • High strength with the ability to withstand high pressures • Wide operating temperature range • Precise design and performance characteristics • Low spring rate (the amount of force required to compress the bellows a given distance) • Low stress in critical areas • Allow for optimal plate shape design―nesting ripple • Only one moving part • Static secondary seal Deciding that an edge-welded metal bellows seal is optimal for your application is not the end of the selection process.

Differentiating bellows features include plate shape and thickness, vibration attributes, double- or single-ply, faceangle, etc., all impact product effectiveness.

Operators should understand these differences to select the most suitable sealing solution and their influence on seal reliability, mean time between repair, standardized inventory, fugitive emissions control and water conservation.

The following are seven key distinctions and features of

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Figure 1: High-temperature welded metal bellows assembly with flexible graphite secondary seals. welded metal bellows.

Plate shape The plate shape influences flexing, stroke and operating length. In a nesting-ripple configuration, all the plates in the bellows are identical and contoured to permit nesting when compressed.

Contouring also improves the ability to withstand high pressure. The nesting-ripple plate shape is also more effective in achieving maximum flexing, long (axial motion) stroke with short operating lengths and a low spring rate.

The sweep radius is optimized at 20-25% of span and it prevents a phenomenon known as oil-canning, wherein/ out bulging of the plate occurs like on the bottom of an oil can when it is pressed. Each convolution is made up of a male and female plate that allows the seal to be designed with short axial space.

Angle For bellows with straight flat segments, the variability of the microstructure in the heat-affected zones results in less reliable weld joints. By theoretical analysis using

Weld integrity State-of-the-art manufacturing processes must be used to create the bellows to ensure weld integrity by preventing excessive root gap with bead geometry, bead thickness and roll-over control (Figure 2). Be sure that the bellows units are checked for leak-tight performance with helium mass spectrometry and vacuum-tested to 10-6 Torr. With helium mass spectrometry, the seal is evacuated internally and blanketed in helium. Traces of gas, which then penetrate through either a break in the weld or a material flaw, are immediately picked up by the sensing probe and the seal is rejected.

Figure 3: A laminated metal bellows offer a significantly lower spring rate compared with single-ply plates of 2X the thickness. This bellows-type is used in higher pressure applications. faces. Thinner plates are more difficult to manufacture, which is why many manufacturers are forced to use thicker plates.

Controlling vibrations

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linear, thin-shell theory, it has been shown that tilting the bellows axis drastically reduces stress at the welds and heat-affected zones. The analysis indicates that the stresses at the welds are predominantly bending stresses, but increasing tilt angles lower these bending stresses. This design principle also has been thoroughly documented in both theoretical and empirical studies conducted by an independent government-sponsored agency and verified experimentally. With a 45° tilt angle, bending stresses are directed away from the weld heat-affected zone. This results in plate rigidity, which adds reliability and reduces fatigue.

Not all bellows in the industry are fitted with vibration dampeners, which help prevent any potential damage from harmonic vibration caused by episodes of dry-running.

However, a vibration dampener is ideal. In certain seal designs, the vibration dampener pad is a built-in design feature that allows protection, when needed, against potentially damaging vibrations.

Double-ply bellows

Figure 2: Weld bead integrity is ensured by preventing excessive root gap with bead geometry, bead thickness and roll-over control.

Plate thickness (thin plates) Thin plates provide lower spring rates, which result in lower face loads, less unit loading, less heat generation and longer seal life. Thicker bellows plates have higher spring rates and are more susceptible to metal fatigue. Repeated plastic deformation of the plates (beyond their plastic limit) during deflection can result in fatigue and greatly reduce seal life. Increasing the plate material thickness, though easier to weld, increases its stiffness and the spring rate of the bellows significantly. A high spring rate is undesirable because of the significant changes in sealing face loading with only slight changes in seal operating length. This causes excessive closing force, which in turn causes loss of the lubricating film between the sealing faces, excessive face heat and, eventually, seal failure. This is especially critical in high-temperature and poor-lubricating environments. Bellows with high spring rates are also less capable of compensating for installation problems, shaft movements, impeller adjustments, pump end play, shaft growth due to heat and the gradual wearing of the sealing

Double-ply bellows create strength and flexibility without thickness. Double-ply bellows are typically utilized in higher-pressure applications and often used in services in which the fluid is thermo-sensitive or tends to set up and solidify on the seal faces where more start-up torque strength may be required (Figure 3). The double-ply design principle is like the leaf springs used in light automotive trucks and trailers. A spring, comprised of a single, thick, metal member with the strength necessary to support the load would result in much too stiff a spring. But, when the strength is obtained by using a "stack" of separate, individually flexing thin leaf elements, the spring rate is well within desired limits. Similarly, the spring rates of twoply bellows proved to be significantly lower than those of single-ply bellows with twice the plate thickness.

Pressure and seal balance Before you specify a metal bellows seal, you need to determine the proper pressure rating required by your application to temperature, speed and sealed fluid lubricity, as well as determine if the seal is capable of handling reverse pressure, especially in dual-pressurized seal arrangements. Most standard bellows seals are typically balanced to approximately a 70/30 ratio. This means that 70% of the face contact area is above the effective diameter. More recently, 50% balanced bellows seals have been designed to handle both inner diameter (ID) and outer diameter (OD) pressure. Fifty-fifty balanced seals can handle reverse pressure which is an upset condition that may occur in dual seal operation.

John Crane, +27 (0) 11 812 6300, www.johncrane.com Pipes, Pumps and Valves Africa - Mar/Apr 2020

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PRODUCTS & SERVICES

Know your stuff when choosing flow measurement technology Flow measurement is one of the most important aspects of process control. Despite being one of the most frequently measured process variables throughout the industry, flow can be a very challenging measurement. Jerry Boisvert, regional product manager for America at ABB, discusses flowmeter technologies, where to use them and why.

Finding the right flow meter for your process and plant can be easier said than done. Not only are there numerous types of instruments for measuring the flow of liquids, gases and streamflow, there is also no single flowmeter technology that can cover all flow measurement applications.

provide measurements on gasses, liquids and steam, there is no single flow meter technology that can do all types of flowing media. Yes, some will overlap and there are times where technology can be used multiple times, but ultimately you need to answer some questions first before you choose what to use."

How one goes about determining which flow technology to use to meet a specific application and situation, therefore, requires a firm understanding of flow measurement and the technology available.

Flow technology perspective

"Flow is defined as measuring a volume or a quantity flowing through a closed pipe," explains Boisvert. "It can also be an open channel flow going through a primary element like a flume or wear with a measuring device on top. Flow is measured in a variety of sectors from oil and gas to chemical, pulp and paper, wastewater and electricity generation. It is probably one of the most frequently measured process variables throughout the industry, yet flow can be a very challenging measurement for the best of us."

Especially, he says, when working in environments with higher pressures and temperatures, solids suspended within the fluid and entrained air to mention a few.

"All of these adversities can cause problems and while there are many types of flow measurement devices to 38

Pipes, Pumps and Valves Africa - Mar/Apr 2020

According to Boisvert ABB have developed an extensive white paper on what they have dubbed the "Big 6" technologies. This paper is available from the company and gives an in-depth insight into the various technologies.

He says before one can decide, however, on any one of the Big 6 technologies available, there are a couple of questions that need to be answered.

Price and budget This takes a look at the installed cost versus the cost of ownership. Boisvert explains that there are several costs to consider when purchasing flow technology of which first and foremost is the installation cost followed by the measurement cost. One must also consider the reliability, maintenance and energy usage of the technology and measure that up against the budget available.

What is the purpose of the measurement?

Various technologies offer different purposes making it

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imperative that one has a clear indication of what the purpose of the measurement is in any given application. Is this just to maintain a proper flow rate control or is it being used to track or discharge by monitoring. It might be for billing of an external function through custody transfer or the purpose might be to try and achieve a specific recipe or blend of high quality. Another purpose might be as an alarm system indication for safety reasons, detecting spillage or leak for example.

According to Boisvert, several primary questions must be answered before choosing any technology: • What is the flowing material? Liquid, gas or steam?

• What are the flow of media properties and operating conditions?

• What flowrate is desired and what are the pipe particulars?

• Is a display needed?

• What is the desire to know the rate and total flow?

• What output is required and what is the communication requirement as well?

• Where is the device located?

• How accurate must the flow measurement be?

• Do you require more information from technology like enhanced diagnostics?

"All of these things come into play and are determining factors in the decision-making process of what measurement technology to install."

The Big 6 explained: Differential Pressure Measurement or DP Flow uses a variety of well-utilized instruments. There is a primary and secondary element that makes up the bulk of the system.

“The primary element is placed in the pipe to create a differential pressure. This is accomplished by constricting the flow in the pipe to create a pressure drop from one

is proportional to the velocity of the flow. The beauty of this flow meter is that it does not obstruct flow and can, therefore, be applied to clean, sanitary, dirty, corrosive and abrasive liquids."

Coriolis Mass Flow Measurement is a technology that has caught on rapidly over the past ten to 15 years according to Boisvert. "The meter tubes have oscillated at the resonance frequency. The frequency depends on the fluid density and is used for its measurement," he explains.

"When mass flows through the tubes, the oscillation is twisted, creating a phase shift between inlet and outlet sections. The amount of phase shift is proportional to the mass flow rate of fluid passing through the tubes."

A benefit, says Boisvert, is that the measurement is not affected by fluid density changes and can be applied to measure liquids, gases, vapour or steam.

Vortex flowmeters make use of a principle called the von Karman effect. "Flow will alternately generate vortices when passing by a bluff body," says Boisvert. "Flow velocity is proportional to the frequency of the vortices. Low flow rates, however, present a problem for vortex meters."

According to Boisvert, this technology is best applied to relatively clean and sanitary liquids.

Swirl Flow Measurement, he says, involves a stationary turbine rotor located in the inlet. The medium is forced to rotate and flows through the meter tube in a threadlike rotation.

"One of the limitations is that pulsating flows have a detrimental effect on accuracy."

side to the other. The differential pressure created across the constriction is proportional to the square of the flow rate,” explains Boisvert.

Electromagnetic Flow Measurement is based on Faraday’s Law of Electromagnetic Induction. An electrical current is applied to a coil package inside the flowmeter. As a result, explains Boisvert, a magnetic field is created across the metering pipe. When the conductive liquid flows through the magnetic field, a small voltage is induced. "Voltage 40

Pipes, Pumps and Valves Africa - Mar/Apr 2020

Ultrasonic flow measurement uses sound waves to determine the velocity of a fluid flowing in a pipe.

According to Boisvert, it is commonly applied to measure the velocity of liquids that allow ultrasonic waves to pass.

ABB, +27 (0) 10 202 5000, www.new.abb.com

VAMCOSA VALVE AND ACTUATOR MANUFACTURERS CLUSTER OF SOUTH AFRICA

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Incledon launches latest Tekflo universal couplings Incledon, a leading provider of quality fluid conveyance products and solutions, recently launched a new range of universal couplings, adding to its current range of Tekflo-branded products based on quality, value, and performance.

Incledon, a leading provider of quality fluid conveyance products and solutions, recently launched a new range of universal couplings, adding to its current range of Tekflo-branded products based on quality, value, and performance.

The Tekflo universal coupling range has been designed and developed to join various pipe materials with various outside diameters within a pipeline. Featuring a corrosionresistant 300 Âľ fusion-bonded epoxy-coated body as standard, the outside diameter range caters for various pipe materials to be joined within the specified ranges.

Sizes are available from 50 mm DN to 350 mm DN. Ductile iron sleeves and end rings, EPDM gaskets, galvanised carbon steel bolts, and nuts and washers allow the couplings to operate at a nominal pressure of 1.6 MPa in water conveyance.

Incledon distributes products utilised in the conveyance of water, gases and liquids. It has the largest and widest consolidated quality product offering to service the diverse industries it operates in and is well-positioned to take advantage of the government’s infrastructure development programmes.

Today Incledon has branches in every major South African city, with a formidable national footprint, including Bloemfontein, Upington, Cape Town, Durban, East London, George, Johannesburg, Mbombela, Polokwane, Port Elizabeth, Secunda, and Rustenburg to ensure that customer service remains the top priority.

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Incledon, Charmaine Munian, +27 (0) 11 323 0800, charmaine.munian@incledon.co.za, www.incledon.co.za

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Hawk High Pressure Pumps

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T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@matherandplatt.com W:www.matherandplatt.com Pipes, Pumps and Valves Africa - Mar/Apr 2020

43

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SELF PRIMING PUMPS

C.R.I Pumps S.A. (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

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 SLURRY PUMPS

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

PLUNGER PUMPS

Hawk High Pressure Pumps

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

Hawk High Pressure Pumps

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

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 Walter Meano Engineering E:cri-za@crifluidsystems.com VersaFlo VSE Pumps W: www.cripumps.co.za T: +27 (0) 11 873-8620 F: +27 (0) 11 825-1401 E: wme@mweb.co.za W: www.versaflo.co.za

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

APE Pumps Stewarts & Lloyds (Pty) Ltd

Integrated Pump Rental

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

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

SUBMERSIBLE PUMPS

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 Franklin Electric W: www.cripumps.co.za T: +27 (0) 11 723-6500 E: info@franklin-electric.co.za VACUUM PUMPS W:www.franklin-electric.com

Integrated Pump Technology

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

Integrated Pump Technology

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

Pamodzi Unique Engineering

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

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Integrated Pump Rental

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

Pipes, Pumps and Valves Africa - Mar/Apr 2020

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

AESPUMP SA

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

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

AESPUMP SA

VERTICAL TURBINE PUMPS

KSB (Pty) Ltd

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

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

VALVES BALL VALVES

Enserve Engineering Services (Pty) Ltd

Pleix-Quip Africa (Pty) Ltd

T: +27 (0) 11 736-4994 F: +27 (0) 11 736-6130 E: tiaans@pleixquip.co.za W: www.pleixquip.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 BUTTERFLY VALVES

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

Enserve Engineering Services (Pty) Ltd

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

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

KV Controls (Pty) Ltd

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

CONTROL VALVES

Macsteel Fluid Control

T: +27 (0) 11 838-4028 C: +27 (0) 82 823-7703 E:rowan.blomquist@macfluid.co.za W: www.macsteel.co.za

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 GATE VALVES

Bray Controls Africa 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

KSB (Pty) Ltd

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

Pleix-Quip Africa (Pty) Ltd

T: +27 (0) 11 736-4994 F: +27 (0) 11 736-6130 E: tiaans@pleixquip.co.za Web: www.pleixquip.co.za

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

Bray Controls Africa

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

Pleix-Quip Africa (Pty) Ltd

T: +27 (0) 11 736-4994 F: +27 (0) 11 736-6130 E: tiaans@pleixquip.co.za W: www.pleixquip.co.za

KV Controls (Pty) Ltd

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

Valcon Valve & Controls

T: +27 (0) 11 453-7537 F: +27 (0) 11 453-6056 E: valconsa@iafrica.com W: www.valcon.co.za

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

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

Macsteel Fluid Control

T: +27 (0) 11 838-4028 E:rowan.blomquist@macfluid.co.za W: www.macsteel.co.za

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

Enserve Engineering Services (Pty) Ltd

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

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

Mine Track & Tools (Pty) Ltd

T: +27 (0) 11 412-4536 T: +27 (0) 11 412-1665 E: info@minetrack.co.za W: www.minetrack.co.za

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

KV Controls (Pty) Ltd

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

Macsteel Fluid Control

T: +27 (0) 11 838-4028 C: +27 (0) 82 823-7703 E:rowan.blomquist@macfluid.co.za W: www.macsteel.co.za KNIFE GATE VALVES

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

KSB (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 Pipes, Pumps and Valves Africa - Mar/Apr 2020

45

VALVES KNIFE GATE VALVES

Mine Track & Tools (Pty) Ltd

T: +27 (0) 11 412-4536 T: +27 (0) 11 412-1665 E: info@minetrack.co.za W: www.minetrack.co.za PINCH VALVES

Valcon Valve & Controls

T: +27 (0) 11 453-7537 F: +27 (0) 11 453-6056 E: valconsa@iafrica.com Web: www.valcon.co.za

KV Controls (Pty) Ltd

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

ACTUATORS

VALVE RECONDITIONING

Kaytar Valves (Pty) Ltd Enserve Engineering Services (Pty) Ltd

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

Mine Track & Tools (Pty) Ltd

T: +27 (0) 11 412-4536 T: +27 (0) 11 412-1665 E: info@minetrack.co.za W: www.minetrack.co.za ACCESSORIES

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

46

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

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 HOSES

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

Pipes, Pumps and Valves Africa - Mar/Apr 2020