Bi-directional gate valve

Details Bi-directional gate valve Bi-directional gate valve

1986-03-27

1989-04-25

Rosenthal, Arnold

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251175, 251328, F16K 316

Patent

active

048240745

ABSTRACT:
A gate valve improvement including a seat-to-body seal means for reliable bi-directional sealing, a port to bypass at least one of the seat-to-body seals, and means to plug the bypass port when the operation of this seal is desired.

REFERENCES:
patent: 2318575 (1943-05-01), Armington et al.
patent: 3135284 (1964-06-01), Magos
patent: 4363465 (1982-12-01), Morrill
patent: 4428561 (1984-01-01), Thompson

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