Diaphragm valve

Details Diaphragm valve Diaphragm valve

1990-10-17

1992-07-21

Rosenthal, Arnold

Valves and valve actuation

Reciprocating valve

Diaphragm

251 636, 251365, F16K 717

Patent

active

051316277

ABSTRACT:
A diaphragm valve includes a single layer, metal diaphragm cooperating with a plastic valve seat. The surface area and volume of the valve seat is limited. Additionally, the central portion of the diaphragm is generally hemispherically offset and extends axially from a planar periphery. The actuating stroke of the valve is maintained less than the offset that is formed in the diaphragm. Lastly, the valve seat is secured in such a manner to insure repetitive long term shutoff under a variety of operating conditions and limit entrapment and outgassing of potential system contaminants.

REFERENCES:
patent: 1656214 (1928-01-01), Masson
patent: 2585863 (1952-02-01), Smith
patent: 4718442 (1988-01-01), Nicoll
patent: 4867201 (1989-09-01), Carten
patent: 4953826 (1990-09-01), Ohmi et al.

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