Design and manufacture standard: Design and manufacture standard:
Design standard: ASME VIII, API520
Structure length: API526
Inside nominal diameter: 1/2”-20”
Pressure range: 150LB-2500LB
Bellows in the bellows seal balance safety valve can eliminate the influence of system backpressure fluctuation on the action performance of safety valve, and can protect spring and other internals from corrosion by media.