Pressure and vacuum relief valve assembly

Details Pressure and vacuum relief valve assembly Pressure and vacuum relief valve assembly

1977-05-25

1978-08-29

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

220203, 220204, F16K 1726

Patent

active

041096746

ABSTRACT:
In a pressure and vacuum relief valve assembly for a container that normally operates to limit pressure in the container both above and below atmospheric pressure, an auxiliary seal arrangement is provided that operates to prevent leakage from the container during and after an abnormal pressure surge.

REFERENCES:
patent: 3937358 (1976-02-01), Smith
patent: 3983894 (1976-10-01), Sheppard
patent: 4033475 (1977-07-01), Evans

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