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FloPlast D550 110mm Non-Return Valve – PVC-U single-flap anti-backflow valve for underground drainage systems
The FloPlast D550 110mm Non-Return Valve (Single Flap) prevents wastewater backflow from entering underground drainage systems during flooding or surcharging.
Fitted inline within a 110 mm drain run, the valve allows normal flow outwards but closes automatically to block any reverse flow.
It’s an essential safeguard for properties prone to flooding or connected to combined sewers.
The D550 features a removable inspection cover for easy maintenance and a secure locking flap to hold the valve open during cleaning.

FloPlast 110mm Non-Return Valve (Single Flap)

£107.49Price
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  • Brand    FloPlast
    SKU    D550
    Type    Non-Return Valve – Single Flap
    Diameter    110 mm
    Material    PVC-U
    Colour    Terracotta
    Operation    Hinged single flap – automatic closure under backflow
    Application    Prevents backflow in underground drainage systems
    Standard    BS EN 13564-1 (Anti-flood devices)
    Access    Removable top cover for inspection and cleaning
    Guarantee    10 Years
    Condition    New

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