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BNSV Silent check valve


Silent check valve is to rely on the flow of the medium itself and automatically open and close the valve disc, which is used to prevent the medium backflow and produce destructive water hammer, protect the water pump, pipeline and other equipment, also known as check valve, one-way valve, reverse flow valve and back pressure valve. It belongs to an automatic valve, which is mainly used in water supply system, drainage system, fire pipe system, agricultural irrigation system, etc.

● The flow channel inside the valve body adopts streamline design with small head loss;

● The valve disc stroke is short, which can realize the rapid closing of the valve, and the operation is stable without vibration and noise;

● Reasonable structure and good sealing performance;

● Wear resistance and long service life.




Ductile iron、WCB

Seat、Bearing bush、 disc and shaft

Bronze or Chromium stainless steel


Stainless steel