Sanitary diaphragm valve

Details Sanitary diaphragm valve Sanitary diaphragm valve

2007-12-25

2007-12-25

Rivell, John (Department: 3753)

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

C251S331000, C251S335200

Reexamination Certificate

active

10523895

ABSTRACT:
The invention relates to a valve intended in particular for sanitary applications, comprising a body in which there are a first and a second perpendicular duct for the flow of a fluid to be shut off; a closure member acts in the valve body to close and open the first duct. The closure member is constituted by a central core with a flexible, circular ring extending around it and has a head having a diverging profile which closes and opens the first duct as a result of the action of the actuator means.

REFERENCES:
patent: 3134570 (1964-05-01), Jarrett
patent: 4819691 (1989-04-01), Löfgren et al.
patent: 4826132 (1989-05-01), Moldenhauer
patent: 4828219 (1989-05-01), Ohmi et al.
patent: 4917357 (1990-04-01), Danko
patent: 5152500 (1992-10-01), Hoobyar et al.
patent: 5277401 (1994-01-01), Butler et al.
patent: 5820105 (1998-10-01), Yamaji et al.
patent: 6145810 (2000-11-01), Connelly et al.
patent: 0 072 681 (1983-02-01), None
patent: 0 508 658 (1992-10-01), None

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