Axial Flow Silent Check Valve One Way Flow Non Return Valve

Silent Check Valve is a Axial Flow type check valve, the fluid behaves primarily as laminar flow at its surface, with little or no turbulence. The inner cavity of the valve body is a Venturi structure. When the fluid flows through the valve channel, it gradually shrinks and expands, minimizing the generation of eddy currents. The pressure loss is small, the flow pattern is stable, no cavitation, and low noise.

  • Size: 2”-24”/DN50-DN600
  • Pressure Rating: PN6/PN10/16
  • Warranty: 18 Month
  • Brand Name: ZFA Valve
  • Service: OEM
  • Product Detail

    Product Detail

    Size & Pressure Rating & Standard
    Size DN50-DN600
    Pressure Rating PN6,PN10, PN16, CL150
    Face to Face STD API609, BS5155, DIN3202, ISO5752
    Connection STD PN6, PN10, PN16, DIN 2501 PN6/10/16, BS5155
    Body Cast Iron(GG25), Ductile Iron(GGG40/50), Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529), Bronze, Aluminium Alloy.
    Disc DI+Ni, Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529), Bronze, DI/WCB/SS coated with Epoxy Painting/Nylon/EPDM/NBR/PTFE/PFA
    Stem/Shaft SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel
    Seat NBR, EPDM/REPDM, PTFE/RPTFE, Viton, Neoprene, Hypalon, Silicon, PFA

    Product Display

    DN100 PN16 silent check valve-2
    PN16 silent check valve-1
    DN100 PN16 silent check valve-3

    Product Advantage

    product description
    Silent check valve is composed of valve body, valve seat, flow guide, valve disc, spring and other parts. The internal flow channel adopts a streamlined design with small pressure loss. The opening and closing stroke of the valve disc is very short. It can be quickly closed when the pump is stopped, preventing huge water hammer sounds and creating a silent effect. This valve is mainly used in water supply, drainage, fire protection, and HVAC systems. It can be installed at the outlet of the water pump to prevent medium backflow and water hammer damage to the pump.
    Product Features

    1. The internal flow channel of the silent check valve adopts a streamlined design, with small flow resistance and energy saving. It is closed by its own spring force to prevent water hammer.
    2. When the pump is stopped, the valve disc has a short closing time with multiple springs and can be closed quickly to avoid water hammer and huge water hammer sound, creating a silent effect.
    3. This valve needs to be installed vertically (the axis of the valve body is vertical).

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