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With Buildin Strainer /Atmospheric Vent
MODEL NO. GHS41X-A/B
Conventional type anti-pollution cut off valve is composed of two non-return valves in tandem connection.
This Model GHS41X-A/B safety antifouling shut off valve is with an extra drainage and pressure relief device at the secondary non-return system and an optional filter. 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.
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Medium applicable
Water etc
Temperature
applicable0 ~ 60ºC
Nominal Pressure
PN10--PN25
Nominal Diameter
DN40--DN600
Flange Dimension
ASME B16.5, BS4504, ISO2531, ISO7005 and other standards conforming to the requirements
Thread
typeISO, NPT, BSP etc
Face to Face Length
API594,BS5155, ISO5752, DIN3352 and other standards conforming to the requirements
Material
Body, Bonnet
Disc, Seat
Drainage device
Stem
Gasket
Spring
Grey Cast iron,
Ductile Iron,
Cast Steel
Brass  etcBrass
Stainless steelCast steel,
Stainless steelStainless steel
NBR
Stainless steel
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Buildin Strainer Safety Antifouling Atmospheric Vent Non Return Dual Check Valve
Model NO.: GHS41X
Origin: China
Safety Antifouling Dual Check Valve