Diaphragm valve

Details Diaphragm valve Diaphragm valve

1986-05-16

1987-06-09

Chambers, A. Michael

Valves and valve actuation

Hermetic flexible wall seal for actuator

Diaphragm

251267, 251357, F16K 3100

Patent

active

046714901

ABSTRACT:
A diaphragm valve which uses a multiple annular metal diaphragm welded about its inner periphery to a valve operating stem. The diaphragm is sealingly clamped about its outer periphery to the valve body and is also clamped about its inner periphery at a location spaced outwardly of the weld to prevent the weld from being subjected to flexure stresses during valve actuation. The actuating assembly is arranged to produce non-rotary, reciprocatory movement of the operating stem through a bonnet mounted rotary actuator. An improved stem tip seal arrangement is also disclosed.

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D. J. Steger, "Actuator with Wall Flexure Control," IBM Tech. Disclosure Bul., vol. 15, No. 3, Aug. 1972.

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