الوصف

rubber slowly closing check valve is a new water supply and drainage valve with full rubber structure ,”duck-mouthed” appearance and function of “positive flow –in and reserve-off”. According to thrust analysis and calculation as well as different operation condition .it is manufactured with different design mechanism and different rubber products by special processing .At positive operation the water flow in form entrance and the valve will be open at weak hydraulic pressure ;the hydraulic pressure id higher ,the valve gate will open more greatly and the water flow is greater .At reserve operation ,the valve gate closes naturally and seals tightly cut-off valve ;the back pressure is higher ,the valve gate closes more tightly and the seal effect is better .it is used widely in various drainage exit to prevent form pouring backwards and flowing backwards in city planning ,water conservancy and sewage disposal etc. it is the ideal product to replace flap valve.

Product characteristics:

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

1.Open and close automatically in security and reliability according to hydraulic different 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 form flowing backwards. The back pressure is higher and effect is better .

4. Anticorrosion, aging resistance ,deformation resistance ,strong adaptability and long use life

5. Wide size scope ,nominal diameter of DN**-DN***0

Application scope

1. Applicable for sewage system

2. Applicable for discharge system

3. Applicable for dyke discharge

4. Applicable for the drainage of air port and freeway.

5. Applicable for sewer discharge

6. Applicable for sewage lagoon discharge

7. Sell separation