Vacuum closed venting valve

Details Vacuum closed venting valve Vacuum closed venting valve

1980-11-24

1983-01-04

Walton, George L.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

91468, 119 1408, 13762568, A01J 510

Patent

active

043668313

ABSTRACT:
A venting valve comprising a body having first and second ports. A movable valve member having a venting passage is located in the body and is biassed to a first position where the venting passage provides communication between the first and second ports. A chamber is located within said body and a third port opens into the chamber. The construction and arrangement is such that the introduction of sub-atmospheric pressure into the chamber via the third port causes the valve member to move to a second position where the first port is isolated from the second port but is opened to the third port via the chamber.

REFERENCES:
patent: 2652847 (1953-09-01), Segebarth
patent: 3910466 (1975-10-01), Collar
patent: 4023588 (1977-05-01), Olander

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