Diaphragm valves

Details Diaphragm valves Diaphragm valves

1974-09-04

1976-08-17

Schwadron, Martin P.

Fluid handling

Larner-johnson type valves; i.e., telescoping internal valve...

Internal servo-motor with internal pilot valve

251 30, 251 46, 251 61, 92 98D, 92105, F16K 31165

Patent

active

039748499

ABSTRACT:
A valve assembly comprises a body having an inlet and an outlet, a chamber between the inlet and the outlet, a valve diaphragm fitted in the valve body and attached to a rigid closure member adapted to close the inlet with the periphery of the diaphragm supported by a wall of the chamber, and an auxiliary control, or pilot valve communicating with the chamber, said diaphragm comprising an annular member of rubber-like material with a thin outer peripheral portion and a thickened inner portion.

REFERENCES:
patent: 862867 (1907-08-01), Eggleston
patent: 1115100 (1914-10-01), Peet et al.
patent: 2623542 (1952-12-01), Obermaier
patent: 2882006 (1959-04-01), Reinecke
patent: 3023996 (1962-03-01), Robertson
patent: 3076471 (1963-02-01), Salerno
patent: 3367621 (1968-02-01), Griswold
patent: 3459403 (1969-08-01), Royer
patent: 3674237 (1972-07-01), Heyer et al.
patent: 3712578 (1973-01-01), Dawson
patent: 3818928 (1974-06-01), Carsten
patent: 3893475 (1975-07-01), Hudson

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