Pressure vacuum relief valve

Details Pressure vacuum relief valve Pressure vacuum relief valve

1977-06-06

1979-01-09

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

220203, 1374939, B65D 5116

Patent

active

041333462

ABSTRACT:
A pressure control valve assembly includes a valve housing having a spring loaded, resilient valve element with reversely curved conical surfaces thereon one of which is seated on a fixed, annular pressure relief seat by a first spring element and the other of which is seated against a spring biased ball check valve that controls flow through a central opening in the valve element defining a vacuum relief path.

REFERENCES:
patent: 2164450 (1939-07-01), Eshbaugh
patent: 2191611 (1940-02-01), Eshbaugh
patent: 2521201 (1950-09-01), Clark
patent: 3067770 (1962-12-01), Fancher

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