Pressure control valve

Details Pressure control valve Pressure control valve

1982-06-10

1984-10-16

Cohan, Alan

Fluid handling

Convertible

Reversible check

1374939, 137491, 1374925, F16K 1718

Patent

active

044768907

ABSTRACT:
A pressure control valve includes a relief poppet biased by a first spring into contact with a seat and an anti-void poppet biased by a second spring into contact with a seat independently of the relief poppet, so that a sharp response of the valve is ensured for a void control or anti-void function and the interference of the anti-void function with a relief function is prevented. Part of the check poppet which faces a relief passageway is formed with a shoulder to direct an outlet portion of a pilot passageway parallel to the axis of the relief passageway, thereby eliminating high frequency vibration of the pilot poppet or generation of noise due to the interference of pilot and main flows of fluid.

REFERENCES:
patent: 3112763 (1963-12-01), Tennis
patent: 4016903 (1977-04-01), Akashi
patent: 4289160 (1981-09-01), Kawasaki et al.

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