Pressure Relief Open Valve (500X)

Model NO.: GL500X Trademark: K Origin: China Certificate: ISO Specification: API, Bs, GB, Jb, DIN, etc. Pressure Release Valve: Functioned to release the pressure in pipeline which is in excess of the safe preset value of pilot valve, and to maintain in the pressure in pipeline below a certain safe value, thus to prevent pipeline equipments from damage due to high or sudden pressure.

This valve is used to release the pressure of fire control test circulating system in high-rises to prevent the system from danger due to excessive hydraulic pressure.

Pressure holding valve: Functioned to maintain the water supply pressure at the upper stream of main valve over a certain preset value.

Emergency Open Valve: Mounted at the water outlet of fire spraying pump, it will immediately open when the pressure at pump outlet rises over a certain preset value.

Specifications
1) Diaphragm type: DN50-DN350
Piston type: DN400-DN800
2) Pressure grade: PN10, PN16, PN25

Main materials:
1) Body and bonnet: Cast iron, ductile cast iron, WCB, WCA,
WCC, A351, 304, 340L, 316, 316L17-4PH
2) Disc: Brass, stainless steel, carbon steel
3) Stem: Stainless steel

Suitable Medium	Water, Oil, Gas and etc.
Main material	CAST IRON,ASTM A216 WCB, WCC, WC6, SS304, SS316, CF8, ETC.
Suitable Temperature	≤80
Nominal Pressure	PN6-PN25
Nominal Diameter	DN50--DN800
Flange Dimension	ASME B16.5, BS4504, ISO2531, ISO7005 and Other standards conforming to the requirements
Face to Face Length	API594,BS5155, ISO5752, DIN3352 and other standards conforming to the requirements

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