rubber check valve

rubber duckbill check valve is a new water supply and drainage valve with full rubber structure. It is used widely in various drainage exit to prevent from pouring backward and flowing backward in city planning, water conservancy and sewage disposal etc. It is the ideal product to replace flap valve.

rubber duckbill check valve

features:

The advantage is specially marked in comparison with traditional flap valve.

1. Open and close automatically in security and reliability according to hydraulic difference without noise and in no need of operator and maintenance.
2. Positive start has little water resistance and start-up pressure and the flow can be adjust naturally according to hydraulic pressure.
3. Reserve cut-off has good seal without leakage to prevent from flowing backward. The back pressure is higher and the effect is better.
4. Anticorrosion, prevent aging, strong applicability and long use life.
5. Wide size scope, rubber duckbill check valve nominal diameter of DN20-2400

 rubber duckbill check valve

application: