Pilot-assisted pressure relief valve

Details Pilot-assisted pressure relief valve Pilot-assisted pressure relief valve

1988-03-31

1989-06-06

Michalsky, Gerald A.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

91420, 1374545, 137495, 137508, F16K 1718

Patent

active

048362409

ABSTRACT:
An improved compact pilot-assisted pressure relief valve is disclosed. The invention includes a vent piston or the like hydraulically dividing the valve body bore into a hydraulic fluid chamber and a spring chamber which is vented to atmosphere, such that backpressure is eliminated entirely for both faster reaction to pressure impulses and improved accuracy in pre-load setting of the valve assembly.

REFERENCES:
patent: 3054420 (1962-09-01), Williams
patent: 3595264 (1971-07-01), Martin
patent: 3665810 (1972-05-01), Parrett
patent: 4336826 (1982-06-01), Grawunde
patent: 4346733 (1982-08-01), Grawunde

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