KWT non return valves are used to prevent backflow in sewer systems. KWT flap– and pump valves are made from durable HDPE (density 0,96); open/close is fixed by a bespoke balance weight.
The EPDM lip seal is routed in at a 3° angle thus providing a perfect flat seal. All valves except KRK-R-O have an additional 15° valve angle that provides added sealing in static position and very low in-pipe water levels. HDPE flapvalves are light weight, easy to install and are very responsive and reliable.
Onseat pressure is standard 5 MwC; higher pressures on request. KRK-R-O is a basic round on -wall flat mounted non return flap valve.
We got the Ø100 up tot the Ø1.000mm KRK-R-O variant for you on stock.