Diaphragm valve

Details Diaphragm valve Diaphragm valve

2006-04-10

2008-12-02

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Reciprocating valve

Particular head and seat cooperation

C251S331000

Reexamination Certificate

active

07458560

ABSTRACT:
A diaphragm valve includes a valve body defining a passageway constructed to form a valve seat, and a diaphragm. A compressor moves the diaphragm between a closing position in which a flow of fluid through the passageway is barred as the diaphragm is caused by the compressor to seal the valve seat, and an open position in which at least part of a cross section of the passageway is bounded by the diaphragm to thereby enable a flow of fluid through the passageway substantially without narrowing the cross section of the passageway.

REFERENCES:
patent: 2716017 (1955-08-01), Linker
patent: 2963266 (1960-12-01), Boteler
patent: 3067764 (1962-12-01), Geary
patent: 3103342 (1963-09-01), Boteler
patent: 5123439 (1992-06-01), Powers

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