High pressure diaphragm valve

Details High pressure diaphragm valve High pressure diaphragm valve

1993-04-13

1994-08-09

Walton, George L.

Fluid handling

With leakage or drip collecting

92 86, 251331, F16K 717, F16K 3700, G01M 304

Patent

active

053356918

ABSTRACT:
A diaphragm valve for high pressure use has a metal diaphragm which is actuated into and out of direct engagement with a valve seat by an air operator acting through a force multiplying lever assembly. The valve seat is confined by rigid interior and exterior sleeves while the sealing surface is contoured to have a concave configuration corresponding to the contour of the diaphragm in its deflected position. The air operator is provided with a stroke adjustment mechanism that is locked in adjusted position by a member that is generally accessible only when the operator is disconnected from the valve.

REFERENCES:
patent: 3131638 (1964-05-01), Wilson et al.
patent: 3269410 (1966-08-01), Alvarado et al.
patent: 3585328 (1971-06-01), Fiore et al.
patent: 4171792 (1979-10-01), Bass
patent: 4667069 (1987-05-01), Cholkeri
patent: 4671490 (1987-06-01), Kolenc et al.
patent: 4901751 (1990-02-01), Story et al.
patent: 5123332 (1992-06-01), Thayer et al.

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