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Spring Full Lift Safety Valve

Nominal Diameter : DN32~DN600
Nominal Preesure : PN10、PN16、PN25、PN40
Design standard : API 520
Face to face Standard : API 526
Connection Flange Standard : EN1092-1
Mainly Material : WCB、LCB、CF8、CF8M、CF3、CF3M etc.

◆ Material Of Spring type Safety valve

Pos. Part Material
1 Body WCB、CF8、CF8M、CF3、CF3M、Duplex steel4A、5A
2 Filter SS304、SS316、S31254
3 Stem SS304、SS316、S31254
4 Bonnet Gasket Graphite+SS316、PTFE
5 Bonnet WCB、CF8、CF8M、CF3、CF3M、Duplex4A、5A
6 Bolt ASMT B193-B7、B8、B8M
7 Nut ASMT B194-2H、8、8M
8 Stem Packing Flexible Graphite
9 Medium Air、Gas & Steam
10 Structure Closed and unclosed
11 Operation Hammer, lever, spring and pilot type

The installation and maintenance of ZHENGFENG VLAVE spring type safety valve should pay attention to the following matters:

1. All safety valves shall be installed vertically.

2. There should be no resistance at the outlet of the safety valve to avoid pressure.

3. Safety valve should be specially tested before installation, and check its official tightness.

4. The safety valve in use should be inspected regularly.

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