KRK non-return flap valve
The KWT flap valve prevents your (waste)water from flowing back. With the application of light weight materials, we keep te opening pressure low.
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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.
- HDPE mounting plate and flap.
- Water tightness EPDM
- Stainless steel 316 schaft and balance weight
Standard:
Suitable for application on concrete walls.
The frame is fitted to the concrete with chemical anchors.
For concrete tubes, please choose oversized.
For assembly/mounting instructions see our website
Optional:
- KRK-P – fitted with a tube for direct connection to a PVC/HDPE pipe with a 15 degree angle for extra closure
- KRK-OH – fitted with an extra mountingplate with a 15 degree angle for extra closure
- KRK-D – fitted with a tube for direct connection to a PVC/HDPE pipe and extra mountingplate with a 15 degree angle for extra closure
- KRK-BS – fitted with a conical tube for direct connection in to a concrete pipe
- KRK-F – fitted with a flange for direct connection to a contra flange (PN10)