Relief valve

Details Relief valve Relief valve

1990-05-23

1991-09-24

Michalsky, Gerald A.

Fluid handling

Line condition change responsive valves

Direct response valves

137514, F16K 1704

Patent

active

050506374

ABSTRACT:
The present invention relates to relief valves, and is drawn to a relief valve that alleviates the rise in the relief pressure, by the compression of a main spring via a moving spring receiving member, due to the introduction of hydraulic pressure at the supply side into a fluid chamber at the rear of a movable spring member. Moreover, an adjustment spring to urge the moving body and to assist the main spring is provided within a fluid chamber, and the urging force of this adjustment spring can be adjusted by the operation of a changing member provided externally of the valve. Thus, the set pressure of the relief valve can be easily and readily changed, and also a fine adjustment of the set pressure can be effected.

REFERENCES:
patent: 2727529 (1955-12-01), Kodet

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