Flexible Drainage Valves

Flexible Drainage Valves are an important component of any drainage system. They are designed to allow water to flow through the drainage system towards a discharge point while preventing the possibility of backflow up the drainage pipes. Backflow can cause serious problems in a drainage system, including flooding and water damage.

Flexseal's range of Flexible Drainage Valves are available in a variety of sizes and configurations to meet the needs of any drainage system. These include Non-Return Valves (also known as One-Way Flap Valves) and End of Line Flap Valves (also known as Headwall Flap Valves).

Non-Return Valve - a non-return valve is intended for use within a sewerage or drainage system to prevent the backflow of sewage or flood water into properties through low-level entries, such as low-level drain gullies, toilets, and washing machine outlets.
End of Line Valve - an end of line flap valve operates much the same as a non-return valve. However, they are primarily intended to prevent backflow in surface water drainage systems with river, estuary, or sea water outfalls, as well as in final effluent outfalls from wastewater treatment works to prevent flood damage.

Our range of flexible drainage valves are designed for easy connection to PVCu drainage pipes, but Mission Rubber Standard Couplings and Bushes may be required for certain pipe sizes or to enable connection to other pipe material types.

Mission

100mm (DN) Rubber Eco Headwall Flap Valve

£86.15

£71.79 ex. VAT

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Mission

150mm (DN) Rubber Eco Headwall Flap Valve

£102.20

£85.17 ex. VAT

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Mission

200mm (DN) Rubber Eco Headwall Flap Valve

£129.10

£107.58 ex. VAT

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Mission

200mm (DN) Rubber Headwall Flap Valve

£388.22

£323.52 ex. VAT

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Mission

250mm (DN) Rubber Headwall Flap Valve

£470.30

£391.92 ex. VAT

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Mission

300mm (DN) Rubber Headwall Flap Valve

£566.60

£472.17 ex. VAT

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Mission

400mm (DN) Rubber Headwall Flap Valve

£771.05

£642.54 ex. VAT

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Mission

500mm (DN) Rubber Headwall Flap Valve

£979.88

£816.57 ex. VAT

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Mission

600mm (DN) Rubber Headwall Flap Valve

£1,463.78

£1,219.82 ex. VAT

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Mission

700mm (DN) Rubber Headwall Flap Valve

£2,231.70

£1,859.75 ex. VAT

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Mission

800mm (DN) Rubber Headwall Flap Valve

£2,723.78

£2,269.82 ex. VAT

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Mission

1000mm (DN) Rubber Headwall Flap Valve

£3,458.12

£2,881.77 ex. VAT

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Mission

1200mm (DN) Rubber Headwall Flap Valve

£5,399.88

£4,499.90 ex. VAT

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Mission

1400mm (DN) Rubber Headwall Flap Valve

£6,662.02

£5,551.68 ex. VAT

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Mission

1500mm (DN) Rubber Headwall Flap Valve

£7,621.44

£6,351.20 ex. VAT

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Densleeve

100mm (DN) Mission Rubber End of Pipe Eco Flap Valve

£103.38

£86.15 ex. VAT

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Densleeve

150mm (DN) Mission Rubber End of Pipe Eco Flap Valve

£122.71

£102.26 ex. VAT

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Densleeve

200mm (DN) Mission Rubber End of Pipe Eco Flap Valve

£154.97

£129.14 ex. VAT

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Mission

200mm (DN) Rubber End of Pipe Flap Valve

£335.81

£279.84 ex. VAT

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Mission

250mm (DN) Rubber End of Pipe Flap Valve

£375.77

£313.14 ex. VAT

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