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Backflow/Flood Prevention

To request more technical information please email us:

Sales@rainwatershop.co.uk

Or Call us on 08458 90 90 65 to discuss the products & bulk orders.

One-way drainage valves to prevent the backflow of floodwater into buildings or rainwater systems. Suitable for use on foul sewers.

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110 mm Backflow Valve

KARZB100
Weight: kg
Larger picture
Backflow Prevention Valve to fit 110 mm (DN 100) pipe

This valve prevents backflow automatically and meets EN13564-1:2001. The valve opens to the full diameter of the pipe to reduce the possibility of blockage, and the lid can be removed for maintenance if necessary. A closure lever allows the valve to be locked shut if required. This valve is suitable for rainwater overflows, foul and stormwater drainage. It is an effective anti-flooding device when installed on properties susceptible to flooding from rivers.

Material :  Polypropylene, with stainless steel valve plate and rubber seals

Weight :  0.88 kg

Max Pressure :  0.5bar

 

160 mm Backflow Valve

KARZB160
Weight: kg
Larger picture
Backflow Prevention Valve to fit 160 mm (DN 150) pipe

This valve prevents backflow automatically and meets EN13564-1:2001. The valve opens to the full diameter of the pipe to reduce the possibility of blockage, and the lid can be removed for maintenance if necessary. A closure lever allows the valve to be locked shut if required. This valve is suitable for rainwater overflows, foul and stormwater drainage. It is an effective anti-flooding device when installed on properties susceptible to flooding from rivers.

Material :  Polypropylene, with stainless steel valve plate and rubber seals

Weight :  1.5 kg

Max Pressure :  0.5bar

 

200 mm Backflow Valve

KARZB200
Weight: kg
Backflow Prevention Valve to fit (DN 200) pipe

This valve prevents backflow automatically and meets EN13564-1:2001. The valve opens to the full diameter of the pipe to reduce the possibility of blockage, and the lid can be removed for maintenance if necessary. A closure lever allows the valve to be locked shut if required. This valve is suitable for rainwater overflows, foul and stormwater drainage. It is an effective anti-flooding device when installed on properties susceptible to flooding from rivers.

Material :  Polypropylene, with stainless steel valve plate and rubber seals

Weight :  3.6 kg

Max Pressure :  0.5bar

 

110 mm Flap Valve

KARZBK110
Weight: kg
Flap Valve to fit 110 mm (DN 100) pipe

Flap Valves are innovative devices used to prevent flooding caused by the back flow of storm water and sewage. Backflow can be caused by intense rain, thaw or floods. The valves prevent backflow into residential and commercial premises via the drain systems, toilets or sewers.

The flap valves can be installed at the end of horizontal sewage pipes entering collection wells, cesspits or in drainage pipes leading storm water to soakaways or rivers.

Material :  Polypropylene, with stainless steel valve plate and rubber seals

Weight :  0.35kg

160 mm Flap Valve - Out of Stock

KARZBK160
Weight: kg
Flap Valve to fit 160 mm (DN 150) pipe

Flap Valves are innovative devices used to prevent flooding caused by the back flow of storm water and sewage. Backflow can be caused by intense rain, thaw or floods. The valves prevent backflow into residential and commercial premises via the drain systems, toilets or sewers.

The flap valves can be installed at the end of horizontal sewage pipes entering collection wells, cesspits or in drainage pipes leading storm water to soakaways or rivers.

Material :  Polypropylene, with stainless steel valve plate and rubber seals

Weight :  0.75kg

Drainage Flap Valve 72 mm-100 mm

KARZBK-DR
Weight: kg
Flap Valve to fit corrugated pipes from 72 mm - 100 mm diameter.

Flap Valves are innovative devices used to prevent flooding caused by the back flow of storm water and sewage. Backflow can be caused by intense rain, thaw or floods. The valves prevent backflow into residential and commercial premises via the drain systems, toilets or sewers.

The flap valves can be installed at the end of horizontal sewage pipes entering collection wells, cesspits or in drainage pipes leading storm water to soakaways or rivers.

The drainage flap valve comes with an ingenious universal coupler to fit drainage pipes from 72 mm to 100 mm.

Material :  Polypropylene, with stainless steel valve plate and rubber seals

Weight :  0.35 kg

110 mm Double Flap Backflow Valve

KARZB1102K
Weight: kg
Double Flap Backflow Prevention Valve to fit 110 mm (DN 100) pipe

This valve prevents backflow automatically and meets EN13564-1:2001. The two valves open to the full diameter of the pipe to reduce the possibility of blockage, and the lid can be removed for maintenance if necessary. A closure lever allows the valve to be locked shut if required. This valve is suitable for rainwater overflows, foul and stormwater drainage. It is an effective anti-flooding device when installed on properties susceptible to flooding from rivers.

The valves can be locked closed independently and serviced seperately.

Material :  Polypropylene, with stainless steel valve plate and rubber seals

110 mm Triple Flap Backflow Valve

KARZB1103K
Weight: kg
Triple Flap Backflow Prevention Valve to fit 110 mm (DN 100) pipe

This valve prevents backflow automatically and meets EN13564-1:2001. The three valves open to the full diameter of the pipe to reduce the possibility of blockage, and the lid can be removed for maintenance if necessary. Closure levers allows the valves to be locked shut if required. This valve is suitable for rainwater overflows, foul and stormwater drainage. It is an effective anti-flooding device when installed on properties susceptible to flooding from rivers.

The valves can be locked closed independently and serviced separately.

Material :  Polypropylene, with stainless steel valve plate and rubber seals