Silence check valves consist of valves body, seat, diversion shuttle, disc, bearing and spring etc.The bore is flow-line designed so pressure loss is very little. The disc's stroke is very short andwhen stop the pump the valves can close quickly and prevent the great noise fromwater-hammering so the valves can close quietly without any noise .It is widely used infeeding/draining system, fire protection and heat supplying system, and it is installed at theoutlet of the pump to prevent backward fluid's and water-hammering's damage to the pump.

Mail part & material
Body: pray cast iron, ductile cast iron
Disc: steel plate, bronze
Spring: Stainless steel
Seat: bronze
Pin: Stainless steel
Technical Specification
-Nominal diameter50350mm
-Nominal pressure1.0~1.6Mpa
-Medium: water and weak corrosive fluid, etc.
-Work temperature: 0~80^oC