Modular, pneumatically operated control valve

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator

Reexamination Certificate

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Details

C137S901000

Reexamination Certificate

active

06840495

ABSTRACT:
A modular, actuated valve controlled by means of pressure fluids comprising a head plate mounted on a housing plate mounted on a base plate, held together by screws, having a piston with attached valve spindle and a pressure relief space provided between the flow passage28, 29and the piston.

REFERENCES:
patent: 3624802 (1971-11-01), Ripert
patent: 3958592 (1976-05-01), Wells et al.
patent: 6386508 (2002-05-01), Steil et al.
patent: 20020024034 (2002-02-01), Hall
patent: 1 216 701 (1970-12-01), None

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