Rubber slowly-closing 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 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, nominal diameter of DN20-2400.


Product characteristics
The advantages are 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 adjusted naturally according to hydraulic pressure.
3. Reserve cut-off has good seal without leakage to prevent from flowing backwards. The back pressure is higher and the effect is barrier;
4. Anticorrosion, aging resistance, deformation resistance, strong adapt-ability and long use life;
5. Wide size scope, nominal diameter of DN50-DN3000.

Applications cope
1. Excellent performance ad wide application scope
2. Applicable for sewage system
3. Applicable for discharge system
4. Applicable for dyke discharge
5. Applicable for the drainage of airport and freeway
6. Applicable for sewer discharge