Diaphragm valve

Details Diaphragm valve Diaphragm valve

1989-08-08

1990-04-17

Walton, George L.

Valves and valve actuation

Reciprocating valve

Diaphragm

137315, 251274, 251214, F16K 716, F16K 3150, F16K 4300

Patent

active

049173570

ABSTRACT:
A diaphragm valve includes a valve body adapted to receive a replaceable diaphragm subassembly. The subassembly includes a sleeve closely received in the valve body. An actuating stem extends through the sleeve and includes a composite diaphragm welded at one end. An intermediate portion of the stem is threadedly received in a closure ring. The closure ring defines a radial gap with a closing cap to permit adjustment of the stem relative to a valve seat. A peripheral portion of the composite diaphragm is clampingly engaged between the valve body and sleeve. The composite diaphragm includes a metal layer having an elastomer bonded to one face to provide superior sealing and strength properties.

REFERENCES:
patent: 2323531 (1943-07-01), Franck
patent: 2388989 (1945-11-01), Mueser
patent: 2654559 (1953-10-01), Franck
patent: 2939676 (1960-06-01), Kilcoin
patent: 4070004 (1978-01-01), Friswell
patent: 4671490 (1987-06-01), Kolenc et al.
patent: 4750709 (1988-06-01), Kolenc et al.

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