Silent Check Valve

Silent Check Valve
Model No.: HC42X Hits: 22
China Silent Check Valve manufacturer Xinhai offers Cast Iron, Cast Steel Silent Check Valves, Stainless Steel Spring, PN1.0 - PN2.5, DN50 - 500mm.
  • Silent check valve is widely utilized for feedwater system and drain system. Valve disc is guided by central shaft at two ends, realizing on-off rapidly. The valve can be installed vertically or horizontally. The disc is loaded by spring which can close the valve quickly and reduce water hammer pressure effectively. Silent check valve has small volume, light weight and long service life.
    The check valve consists of valve body, seat, baffle, valve disc, bushing, spring, etc. The inner channel adopts streamline design for low pressure losses and short closing stroke, which can close rapidly to avoid loud water hammer noise and keep silence. This kind of check valve is mainly installed at the exit of pump for feedwater, drain, fire protection and heating systems to avoid the damage to the pump caused by back flow of medium and water hammer.
    Technical Parameter
    Nominal Pressure(MPa) 1.0 1.6 2.5
    Maximum Working  Pressure 1.0 1.6 2.5
    Seal Test Pressure 1.1 1.76 2.75
    Shell Test Pressure 1.5 2.4 3.75
    Applicable Medium Water 
    Medium Temperature X<80℃, T≤150℃, H≤200℃

    Nominal Diameter (DN) L
    50 120
    65 150
    80 180
    100 240
    125 300
    150 350
    200 450
    250 500
    300 550
    350 572
    400 600
    450 650
    500 700

    Components Materials
    Components Materials 
    Body, baffle Cast iron, cast steel
    Base, bushing, disc, shaft Bronze or stainless steel
    Spring  Stainless steel 

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