Diaphragm valve for compressed or liquefied gases

Details Diaphragm valve for compressed or liquefied gases Diaphragm valve for compressed or liquefied gases

2006-03-02

2009-02-17

Bastianelli, John (Department: 3753)

Valves and valve actuation

Mechanical movement actuator

Plural dissimilar mechanical movements

C251S276000, C251S335200

Reexamination Certificate

active

07490811

ABSTRACT:
A diaphragm valve for compressed or liquefied gases, comprising a valve body which forms an inlet which can be associated with a pressurized gas cylinder and forms a gas outlet port. A closure port is provided between the inlet and the outlet port, and a gasket acts on the closure port and is supported by a flow control element, which engages the internal face of a diaphragm, on the outer face whereof there acts a pusher piston, which can be actuated by means of an external knob. Between the diaphragm and the pusher piston, at least one metallic disk being arranged which is not retained at its edges.

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patent: 5829472 (1998-11-01), Greenwood et al.
patent: 6189861 (2001-02-01), Gotch et al.
patent: 6554251 (2003-04-01), Takeda et al.

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