Pilot-operated safety relief valve assembly

Details Pilot-operated safety relief valve assembly Pilot-operated safety relief valve assembly

1996-04-29

1998-03-10

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

1374925, F16K 31124

Patent

active

057250154

ABSTRACT:
An assembly and method for controlling the opening of a safety relief valve exposed to a system fluid pressure and containing a control fluid which controls the opening of the safety relief valve. The assembly includes a pilot valve connected to the safety relief valve and adapted to respond to a predetermined pressure of the system fluid for permitting flow of the control fluid. A regulator receives the control fluid and operates to reduce the pressure of the control fluid a predetermined amount. The safety relief valve opens in response to the reduction of the control fluid pressure, and the remaining control fluid pressure modulates the opening of the safety relief valve.

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