flexible valves

flexible valves free maintain it is convenience to install highly flexibility 3 years guarantee time

flexible valves

The duckbill rubber check valves are all rubber reinforced. It consists in an elastomer sleeve flattened in one end. The Duckbill valve can only be opened when the forward flow lifts the sealing flattened side of the sleeve that, otherwise its natural position is to be closed.

The rubber check valve requires no external power sources and because there is not mechanism it doesn't require maintenance, therefore it can be more competitive than other valves used for the same function such as gate valves.

Product features:

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

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

one DN1200 mould:

the handwork process:

flexible valves