with Air Vent Anti Pollution Cut off Valve Safety Back Flow Restrictor Preventor (GHS11X)

• Customization: Available
• Certificate: ISO, Ce
• Connection: Thread End
• Model NO.: GHS11X
• Medium Applicable: Water
• Temperature Applicable: 0~ 80ºC
• Transport Package: 1. Inner: Plastic Package2. Outer: Plywood Case
• Specification: DN40 -- DN600
• Trademark: KARFAR
• Origin: China
• Production Capacity: 2000PCS/Month

Product Description

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 applicable	Water etc
Temperature applicable	0 ~ 80ºC
Nominal Pressure	PN10--PN40(CL150, CL300)
Nominal Diameter	DN40--DN600
Flange Dimension	ASME B16.42, BS4504, ISO2531, ISO7005 and other standards conforming to the requirements
Thread type	ISO, NPT, BSP etc
Face to Face Length	ANSI B16.10, API594,BS5155, ISO5752, DIN3352 etc.

Material

Body, Cover	Disc, Seat	Drainage device	Stem	Gasket	Spring
Gray Cast iron, Ductile Iron, Cast Steel Brass  etc	Brass Stainless steel	Cast steel, Stainless steel	Stainless steel	NBR	Stainless steel