Diaphragm valve

Details Diaphragm valve Diaphragm valve

F - Mech Eng,Light,Heat,Weapons

16

K

251/57

F16K 31/00 (2006.01) F16K 31/50 (2006.01) F16K 41/12 (2006.01)

Patent

CA 1287036

DIAPHRAGM VALVE (Abstract of the Invention) 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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