Vacuum regulating valve

Details Vacuum regulating valve Vacuum regulating valve

2005-04-12

2005-04-12

Bastianelli, John (Department: 3751)

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

C251S122000

Reexamination Certificate

active

06877715

ABSTRACT:
A chamber port to which a vacuum chamber is connected and a pump port to which a vacuum pump is connected are formed on a valve body of a vacuum regulating valve. A valve plug includes a plate and a nose which is connected to the plate by screw members, and closes the chamber port by a pressure fluid. The maximum outer diameter of the nose is smaller than the inner circumferential diameter of the chamber port. The nose is detached through the chamber port.

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patent: 6668854 (2003-12-01), Fukuda
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patent: 2002-89736 (2002-03-01), None
patent: 2002-89737 (2002-03-01), None

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