Uni-directional/bi-directional gate valve

Details Uni-directional/bi-directional gate valve Uni-directional/bi-directional gate valve

1986-03-03

1987-12-08

Scott, Samuel

Fluid handling

Processes

Involving pressure control

13762533, 251327, 251 82, F17D 118

Patent

active

047112620

ABSTRACT:
A gate valve includes a pressure relief port located on the gate valve. When the gate is positioned such that the port communicates with one of the two flow passages and the valve body interior, uni-directional flow is permitted from the other of the flow passages. Flow is blocked bi-directionally when the port is positioned out of communication with the flow passage.

REFERENCES:
patent: 2903006 (1959-09-01), Seaver
patent: 3123090 (1964-03-01), Bredtschneider
patent: 4214600 (1980-07-01), Williams et al.
patent: 4354663 (1982-10-01), Vanderburg et al.
patent: 4364544 (1982-12-01), Kim
patent: 4373700 (1983-02-01), Buchta
patent: 4433827 (1984-02-01), Redman et al.
patent: 4510960 (1985-04-01), Jennings et al.
patent: 4540012 (1985-09-01), Bridges

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