Diaphragm Valve

Details Diaphragm Valve Diaphragm Valve

1995-09-26

1996-06-25

Lee, Kevin

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

251331, F16K 31126

Patent

active

055292801

ABSTRACT:
A diaphragm valve (20) of the class having a diaphragm (32) backed-up by a spring retainer (38). The spring retainer (38) is provided, at a portion thereof facing the valve seat (30), with a relieved surface (48) spaced away from the diaphragm (38) in the free state thereof. The relieved surface (48) permits the diaphragm to resiliently yield in response to any circumferential undulation or unevenness (52) of the valve seat to provide a snug fit between the diaphragm (32) and the valve seat (30) throughout the entire circumference of the valve seat.

REFERENCES:
patent: 4044743 (1977-08-01), Eaton
patent: 4181151 (1980-01-01), Ensign
patent: 4715578 (1987-12-01), Seltzer

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