Anti-Pollution Cut off Check Valve with Atmospheric Vent Model
NO. GHS11X Conventional type anti-pollution cut off valve is
composed of two non-return valves in tandem connection.This Model
GHS11X safety type anti-pollution cut off valve is with an extra
drainage and pressure relief device at the secondary non-return
system. In this way, even if two non-return sealings are broken at
the same time, it still can prevent back flow.It is a safety
device to prevent back flow pollution in pipeline of daily drinking
water system and it keeps drinking water safe and healthy. Safety
type anti-pollution cut off valve is composed of two non-return
valves and one drainage and pressure relief device. The upper
cavity connects with the inlet of first-stage non-return system.
The first and second stage check valve system mainly consists of
valve body, inlet connector, disc, gasket, spring etc. Drainage and
pressure relief device mainly consisted of valve bonnet, diaphragm,
gasket, drainage outlet, spring and air block device. Medium
applicableWater etcTemperatureapplicable0 ~ 80ºCNominal
PressurePN10--PN40(CL150, CL300)Nominal DiameterDN40--DN600Flange
DimensionASME B16.42, BS4504, ISO2531, ISO7005 and other standards
conforming to the requirementsThreadtypeISO, NPT, BSP etcFace to
Face LengthANSI B16.10, API594,BS5155, ISO5752, DIN3352
etc.MaterialBody, CoverDisc, SeatDrainage
deviceStemGasketSpringGray Cast iron,Ductile Iron,Cast
SteelBrass etcBrassStainless steelCast steel,Stainless
steelStainless steelNBRStainless steel /* March 10, 2023
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