Flap valves with spigot end, angled flap

Flap valve with spigot end is a non-return valve for gravity sewers that prevents wastewater from flowing back into the property. During heavy rainfall, pressure in the sewer network increases, and the flap valve safeguards buildings and basements against flooding. The flap is angled 11° and closes against the seat when the flow reverses. The spigot end is inserted into the socket of the connecting pipe, allowing the valve to be fitted in both new pipelines and existing pipework. The design is proven and installation is straightforward. The range covers sizes from DN110 to DN630 and is supplied in designs A, B and C depending on size and application, so the right variant can be chosen to suit conditions on site.