Fluid by-pass/seal means

Details Fluid by-pass/seal means Fluid by-pass/seal means

1977-08-26

1979-07-17

Rosenthal, Arnold

Valves and valve actuation

Reciprocating valve

Gate

251329, F16K 302

Patent

active

041613090

ABSTRACT:
A gate valve having seal members adapted to allow fluid to flow between the upstream seat and the valve housing when the fluid is flowing or attempting to flow in a forward direction, or between the downstream seat and the valve housing when fluid is flowing or attempting to flow in a backward direction, to allow the pressure exerted by the fluid against the upstream and downstream seats and the gate to be substantially equalized while still preventing fluid from incorrectly flowing through the valve.

REFERENCES:
patent: 3006601 (1961-10-01), Anderson et al.
patent: 3307826 (1967-03-01), Lowrey

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