Vacuum valve using improved diaphragm

Details Vacuum valve using improved diaphragm Vacuum valve using improved diaphragm

1986-12-08

1988-01-05

Weakley, Harold W.

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

251331, 92 98R, 92103F, F16K 31145

Patent

active

047171170

ABSTRACT:
A valve (10) comprising a plurality of passages (22,24), and an annular sealing area (30) in communication with one of the passages. The valve also includes a diaphragm (50), movably supported relative to the sealing area (30) in response to a force differential applied thereacross; including a thin, planar, flexible, non-metallic membrane (92) for sealably engaging against the sealing area.

REFERENCES:
patent: 3083943 (1963-04-01), Stewart
patent: 3100002 (1963-08-01), Moore
patent: 4065095 (1977-12-01), Johnson
patent: 4221361 (1980-09-01), Weingarten
patent: 4231287 (1980-11-01), Smiley
patent: 4454893 (1984-06-01), Orchard

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