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Product catalogue ACO Anti-flood Protection Systems
ACO Building Drainage
Our built environment is becoming ever more complex. Applications are becoming more sophisticated and the increasing pressure of regulations and standards make achieving design, performance and financial goals ever tougher. ACO Building Drainage is a new concept within the ACO Group. Our mission: to eliminate design risk, to reduce installed and life cost and to deliver exceptional finish and performance in every product application.
ACO Building Drainage’s extensive portfolio includes:
Stainless steel Modular Channel system
Stainless steel EuroGully gully system
Stainless steel and polymer composite access covers
Biological Grease Management system
Gravity Grease Separator system
Anti-flood protection valves
We achieve this through three factors:
Stainless steel socketed pipe system
High performance materials
Rainwater outlets for flat roofs
Design experience and project support
Global manufacturing capacity
ACO Building Drainage is a division of ACO Technologies plc and part of the worldwide ACO Group. The Group has sales in excess of ÂŁ300 million worldwide with production facilities in the UK, Germany, France, Switzerland, Denmark, Spain, Poland, Czech Republic, Australia and the USA. In total more than 3000 people are employed in 30 countries throughout the world.
Our global resources and fabrication capacity make it possible for us to deliver best value, both with our standard products and with our bespoke designs. Confidence is further assured with quality systems that are in accordance with ISO 9001-2000.
Tel:
01462 816666 Fax:
01462 851490 e-mail Enquiries:
buildingdrainage@aco.co.uk website:
www.acobuildingdrainage.co.uk
Anti-flood protection systems CONTENTS
The need for anti-flood protection systems
Cause and effect
Page 4
Defining the need
Page 5
Backflow level
Page 6
Selecting an anti-flood system
Types of anti-flooding devices
Page 7
Applications
Application areas
Page 8
Load Classes
Page 8
Features and benefits
ACO Junior M
Page 9
ACO ARA
Page 10
ACO SERA
Page 10
ACO ARA/SERA installation chamber
Page 11
Technical data
Technical data for all anti-flood protection systems and accessories
Page 12
Installation
General overview
Page 14
ACO Junior M
Page 15
ACO ARA
Page 15
ACO SERA
Page 15
3
Anti-flood protection systems THE NEED FOR ANTI-FLOOD PROTECTION SYSTEMS
Cause and effect A combination of global climate change together with increasing population densities have placed new demands on drainage infrastructure. For some properties, there is potential for flooding caused by backflow from foul or combined drain systems.
Global climate change
The resulting effects are not only confined to financial costs but also potentially impact health and the short term habitability of the property.
Population density Our environment
Sewer network additions
Cause
Combined sewer systems
Infrastructure constraints
Blockages
Pump station failure Maintenance
Effect
Surcharge
Building use temporarily suspended Financial cost Psychological cost
4
Human effects
Anti-flood protection systems THE NEED FOR ANTI-FLOOD PROTECTION SYSTEMS
Defining the need Overview
Defining risk
Various factors in combination contribute to the risk of sewage flood in a building. The problem is addressed in UK Building Regulations, which, together with other Standards describe measures to help prevent such an occurrence.
Differing local conditions require consultation with the sewerage undertaker in order to determine the extent and frequency of surcharge. Table 1 lists contributing factors.
Normal operation
Backflow situation
Where the risk is considered low, an anti-flooding device should be fitted to sanitary appliances within the basement or other affected areas. If considered high risk, a wastewater lifting plant maybe necessary.
Table 1 Risk driver
Comment
Potential of surcharge from a combined sewer system
Although not current design practice, a legacy of combined foul and rainwater sewers exist. Changing rainfall intensity and duration coupled with increased run-off from hard landscaped areas all affect surcharge potential.
Potential surcharge from foul sewer systems
Foul sewers are not designed to surcharge. However network additions or blockages may compromise or overload the system during peak use.
Position of ground floor level relative to flood or backflow level
Possible scenarios are illustrated graphically overleaf.
5
Anti-flood protection systems THE NEED FOR ANTI-FLOOD PROTECTION SYSTEMS
Backflow level This diagram shows a conventional property that is not at risk of sewer surcharge backflows as the backflow level, or street level, is below the ground level of the building.
Surcharged drain and sewer
Backflow/flood level
This diagram shows a property with a basement that is lying below the backflow level and is therefore at risk of sewage backflow flooding during flood conditions.
Backflow/flood level
Basement
In this case, due to the site falls, the backflow level is above the ground level of the property and therefore at risk of backflow flooding.
Backflow/flood level
Other useful references England and Wales: Approved Document H drainage and waste disposal, Building Regulations 2002 Scotland: Part M Building Standards 2001 BS EN 12056 Gravity Drainage Systems Inside Buildings - Part 1 to Part 4. BS EN 13564 Anti-flooding Devices for Buildings. Technical Standards for Compliance with the Building Standards (Scotland) Regulation 1990: Part M: Drainage and sanitary facilities. The Building Regulations (Northern Ireland) 1994: Technical booklet N: Drainage
6
http://www.ciria.org.uk/flooding/advice_sheets.html
Anti-flood protection systems SELECTING AN ANTI-FLOOD SYSTEM
Types of anti-flooding devices BS EN 13564 defines 6 types of anti-flood device. ACO Building Drainage offer products in accordance with types 2, 3 and 4.
Automatic and emergency
Type 2: Anti-flooding device in horizontal pipes having two automatic closure devices and an emergency closure device, where the emergency closure device may be combined with one of the automatic closure devices. Automatic
Outflow
Backflow
Emergency
Automatic (automated)
Type 3: Anti-flooding device in horizontal pipes having an automatic closure device actuated by external energy (electrical, pneumatic or other) and an emergency closure independent of the automatic closure device. Outflow
Backflow
Emergency Outflow
Type 4: Anti-flooding device incorporated in waste fittings or floor gullies having an automatic closure device and an emergency closure device, where this closure device may be combined with the automatic closure device.
Backflow Automatic
7
Anti-flood protection systems APPLICATIONS
Model Reference
Junior M Floor Gully
SERA In-line Valve System
ARA In-line Valve System
Intermittent flow grey water application in basement/utility room
Continuous flow grey water application. Ground floor/basement location
Continuous flow black water application. Ground floor/basement location
Application areas
Typical installation
Foul drainage connection
110mm
110mm 160mm
110mm 160mm
4
2
3
9 and 12
10 to 12
10, 11, 13
Anti-flood valve type to BS EN 13564 Page
Key Sinks and other appliances - waste water not containing faecal matter or urine.
Sinks, domestic appliances and WC’s - waste water containing faecal matter or urine.
Load classes BS EN 1253 Load Class
8
Description
H1.5
Unused flat roofs such as felt and gravel roofs and similar
K3
Areas without vehicular traffic such as bathrooms in dwellings.
L15
Areas with light vehicular traffic, excluding fork-lift trucks, in commercially used premises.
M125
Areas with vehicular traffic, such as car parks, factories and workshops.
Anti-flood protection systems FEATURES AND BENEFITS
ACO Junior M
Junior M backflow gully For grey water applications (non faecal wastewater)
Robust anti-flood protection point gully
Passive anti-flood protection to BS EN 13564 Type 4
Suitable for load class K3
7
1 One automatic closure valve 2 One manual emergency closure valve 3
3 110mm trapped male spigot outlet
4 4 Flow rate 1.4 l/s 5 50mm water seal 6 Removable sediment bucket 7 Resilient cast iron construction for durability 8 Quick and easy grating removal for access to 8
manual valve in the case of emergency
6
2 1 5
Normal outflow operation Manual valve open
Manual valve shut Backflow occurance automatic valve shut
9
Anti-flood protection systems FEATURES AND BENEFITS
ACO ARA
ACO ARA in-line automated anti-flood system
In-line automated anti-flood system
For black water applications (wastewater containing faeces).
6
1
2
Active anti-flood protection to BS EN 13564 Type 3
Automatic valve closure under motorised control via wall mounted control unit.
1 Automatic closure valve actuated by high-torque electric motor with battery back-up in the event of 3
mains power failure 2 Independent manual emergency closure valve 5
3 110mm or 160mm inlet/outlet options
4
4 Lightweight 7kg weight 5 Tough corrosion resistant polypropylene construction 6 Quick and easy service access for maintenance
7
7 Control unit rated to IP54 for water protection
Available with a tough, corrosion resistant polypropylene telescopic installation chamber supplied complete with stainless steel solid access cover to load class K3 shown overleaf
ACO SERA
ACO SERA in-line passive anti-flood system
(Cutaway image shown)
For grey water applications (non faecal wastewater)
In-line passive anti-flood system
9
Passive anti-flood protection to BS EN 13564 Type 2
3 8 Two automatic closure valves 9 One manual emergency closure valve 10 Lightweight 5.5kg
Available with a tough, corrosion resistant polypropylene telescopic installation chamber supplied complete with stainless steel solid access cover to load class K3 shown overleaf 8
10
10
Anti-flood protection systems FEATURES AND BENEFITS
ACO ARA/SERA Installation Chamber
1 Tough corrosion resistant polypropylene construction has telescopic adjustment for convenient installation. 2 Quick and easy service access for maintenance
3
3 Access cover to load class K3 with 4 locking screws 4 Damp proof membrane bonding flange facility 5 Cable duct supplied for ARA model electrical connection 6 Supplied with ARA or SERA pre-installed
1
2
5
4 6
11
Anti-flood protection systems TECHNICAL DATA
Junior M backflow gully. Type 4. 200 x 150mm
Description Passive gully valve
110mm
150mm
245mm
159mm
276mm
Part No
Outlet Ø mm
Weight kg
Load Class BS EN 1253
04304
110
12.0
K3
SERA backflow valve body only. Type 2.
d
e
a
c
b
Part No
Weight kg
Passive valve 110mm
04306
5.5
210
545
260
35
110
Passive valve 160mm
04309
7.1
245
640
295
30
160
Description
a mm
b mm
c mm
d mm
e mm
SERA backflow valve complete with installation chamber and stainless steel solid access cover. Type 2.
d
340mm
Part No
Weight kg
Load Class BS EN 1253
Passive valve with chamber 110mm
04307
17.8
K3
Passive valve with chamber 160mm
04310
21.1
K3
Description
a mm
b mm
c mm
d mm
e mm
f mm
g mm
h mm
i mm
04307
372-550
335
48
490
110
15
200
271
696
04310
392-570
355
44
578
160
13
230
301
784
Part No
12
h
f
e
c
g
b
i
a
Ø50mm
580mm
Anti-flood protection systems TECHNICAL DATA
ARA backflow valve body only. Type 3.
e
d
a
c
b
Part No
Weight kg
a mm
b mm
c mm
d mm
e mm
Automated valve 110mm
04312
5.5
210
545
260
35
110
Automated valve 160mm
04315
7.1
245
640
295
30
160
Description
ARA backflow valve complete with installation chamber and stainless steel solid access cover. Type 3.
i e
c
h
f
g
b
d
340mm
a
Ă˜50mm
580mm
Part No
Weight kg
Load Class BS EN 1253
Automated valve with chamber 110mm
04313
17.8
K3
Automated valve with chamber 160mm
04316
21.1
K3
Description
a mm
b mm
c mm
d mm
e mm
f mm
g mm
h mm
i mm
04313
372-550
335
48
490
110
15
200
271
696
04316
392-570
355
44
578
160
13
230
301
784
Part No
13
Anti-flood protection systems INSTALLATION OVERVIEW
Connection of other appliances not through anti-flood system
Basement toilet connected to sewer via anti-flood system
Surcharged sewer and connecting pipes
Anti-flood system Type 3
The anti-flood system should be installed as indicated in the diagram above. Here only the basement toilet is connected to the system. 1st and 2nd level floor toilets are connected to a discharge stack that connects to the sewer after the anti-flood system.
14
All anti-flood systems require periodic maintenance. It is therefore necessary to install the product in an accessible area. ACO Building Drainage offer purpose made installation chambers for this purpose.
Anti-flood protection systems INSTALLATION
ACO Junior M Where the product is to be installed in an existing room engineering advice may be necessary to accomodate in-situ damp proof membranes.
Lay the product on a bedding mortar taking care to set the grating level approximately 3mm maximum below finished floor level.
Connect outlet drainage and surround product to within 50mm of grating with concrete.
Lay screed or alternative finished floor material
Fill gully with water to obtain foul air trap.
Screed Concrete surround min 100mm strength class C20/25
ACO ARA/SERA Our instructions assume the use of ACO SERA/ARA installation chamber. Engineering advice should be taken on other proposed methods of installation.
Install the lower section of the unit on bedding mortar ensuring alignment and connection to incoming and outlet drainage pipework. Note that the red emergency closure handle represents the outlet “end� of the product.
Surround in concrete up to membrane flange.
If using membrane, apply suitable adhesive to polypropylene membrane flange following manufacturers instruction. (For further information on damp proof membranes contact Visqueen Building Products 01685 840672).
Ensure all service connections are laid through conduit removing blank plug as necessary.
Install the upper section with cover. Adjust to set the cover to finished floor level. Lay further support concrete around the unit to screed level.
Lay screed.
Ensure emergency closure valve is open by turning fully clockwise.
Max 50mm screed or alternative Concrete min 150mm strength class C20/25
Damp proof membrane
Red emergency handle
15
ACO Technologies plc ACO Business Park, Hitchin Road, Shefford, Bedfordshire SG17 5TE Tel: 01462 816666 Fax: 01462 851490 e-mail: buildingdrainage@aco.co.uk website: www.acobuildingdrainage.co.uk
Š December 2005 ACO Technologies plc. All reasonable care has been taken in compiling the information in this document. All recommendations and suggestions on the use of ACO products are made without guarantee since the conditions of use are beyond the control of the Company. It is the customer's responsibility to ensure that each product is fit for its intended purpose, and that the actual conditions of use are suitable. This brochure and any advice is provided by ACO Technologies plc (the Company) free of charge and accordingly on terms that no liability including liability for negligence will attach to the Company or its servants or agents arising out of or in connection with or in relation to this brochure or any such advice. Any goods supplied by the Company will be supplied solely upon its standard conditions of sale, copies of which are available on request. The Company's policy of continuous product development and improvement renders specifications liable to modification. Information provided in this brochure is therefore subject to change without prior notification.