API Pressure Safety Valve/PSV

The API Pressure Safety Valve/PSV is the last line of defense when abnormal pressure threatens the silo structure. CNM VALVE can provide API Conventional & Bellow type Pressure Safety Valve with Cast steel / Wcb, Stainless Steel / CF8, CF8M, CF3M, Alloy.

API Pressure Safety Valve/PSV Parameter:

Standard : ASME

Size : 1D2 ~ 8T10 .

Body Material : Cast steel / Wcb, Stainless Steel / CF8, CF8M, CF3M, Alloy : Hast . C...

Inlet Pressure : CL150~2500.

Outlet Pressure : CL150~300.

Temperature : - 196°C ~538°C .

API Pressure Safety Valve/PSV Performance:

The allowable tolerance of the set pressure:≤±3% of the set pressure
Overpressure:≤10%of the set pressure
Blowdown:≤10% of the set pressure
Tightness:The valves have good seat tightness ,conforms to API527

Features of API Pressure Safety Valve/PSV:

The solid nozzle screws into the bodyits maintenance is easy.
The shape of the disc holder has been designed toenhancethe effect of the fluid thrust for an instant lift of the disc. Blowdown controlis provided with adjustable nozzle ring only.
The adequate materials and clearance between disc holder and guide,spindle and adjusting screw assures disc to lift successfully.
The surface of both the disc and the nozzle seat is deposited with Stellite.Excellent flatness and surface finish ofthe seating surfaces by precision machining and lapping assure safety valve to have high degree of seat tightness and long using life.
The bellows of balanced bellows safety valve not only can avoid and effect of variable back pressure in the system but also can protect spring and other trim components from corrosive media.
The choice of materials is careful.The manufacture of the spring and the bellows has strict technological process. Each of them is tested and checked strictly.