Valves and valve actuation – Fluid actuated or retarded – Flexible wall expansible chamber reciprocating valve actuator
Patent
1985-08-14
1986-10-28
Weakley, Harold W.
Valves and valve actuation
Fluid actuated or retarded
Flexible wall expansible chamber reciprocating valve actuator
251 45, 251331, 92 98D, 92103F, F16K 31145
Patent
active
046194363
ABSTRACT:
A rolling diaphragm regulator valve is affixed in a globe type valve body and includes a nonstretchable fabric reinforced elastomer diaphragm for covering and uncovering, by rolling action in response to changes in pressure in a control chamber, a plurality of apertures in a baffle positioned between the valve body inlet and outlet. An axially movable spring-biased nose piece, mounted behind the diaphragm, provides a surface over which the diaphragm is draped for controlling substantially all movement of the diaphragm. A travel indicator is operable by movement of the nose piece to provide a visual indication of the position of the valve. In one embodiment the baffle is notched adjacent to a peripheral mounting surface of the diaphragm, whereat the ends of the fabric reinforcement are exposed to permit entrained gases to escape. Other embodiments include areas of the diaphragm, exposed to the apertures, that have pinholes in the elastomer surface and that have the fabric surface exposed.
REFERENCES:
patent: 2501957 (1950-03-01), Moore
patent: 3078066 (1963-02-01), Moore
patent: 3451423 (1969-06-01), Priese
patent: 3623700 (1971-11-01), Boteler
patent: 3982558 (1976-09-01), Ochs
patent: 3982559 (1976-09-01), Ochs
patent: 4295631 (1981-10-01), Allen
Bonzer William J.
Scott Gary L.
Camasto Nicholas A.
Fisher Controls International Inc.
Kubly Dale A.
Weakley Harold W.
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