Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent
1984-08-13
1986-04-08
Focarino, Margaret A.
Valves and valve actuation
Fluid actuated or retarded
Piston type expansible chamber reciprocating valve actuator
251174, 13762548, F16K 1106
Patent
active
045807590
ABSTRACT:
A sliding plate valve for a gas chromatograph or the like is provided with a pneumatic actuator (22) for reciprocating a slider assembly (24) and slide pad (26) over the face surface (28) of the valve body (20). Flow passages (44) are aligned with flow openings (42) in the face surface (28) as the slide pad (26) reciprocates between purge and sample positions. The slide pad (26) is urged against the face surface (28) by force springs (60) which are movable with the reciprocating slider housing (64). The slide pad (26) and assembly (24) are maintained in alignment by the interaction of chamfered grooves (68, 70) and chamfered lip surfaces (76, 78).
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Leaseburge Emory J.
Perkins Curtis L.
Combustion Engineering Inc.
Focarino Margaret A.
Odar H. A.
Snyder Troxell K.
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