Flushometer relief valve

Details Flushometer relief valve Flushometer relief valve

1988-09-12

1989-04-04

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

92103F, 92243, 138 40, 251298, 251900, F16K 31145

Patent

active

048179132

ABSTRACT:
This invention relates to a flexible diaphragm assembly for use in a flush valve having a hollow body, an inlet, an outlet, a valve seat formed in the body between the inlet and outlet, and an operating handle assembly. The diaphragm assembly includes a diaphragm adapted to be peripherally attached to the flush valve body and a barrel integral with the diaphragm. The barrel has a seat member on its exterior positioned for sealing engagement with the body valve seat. There is an annular valve seat on the interior of the barrel and a relief valve is positioned within the barrel and has a seat portion positioned to close upon the barrel valve seat. The relief valve has an annular flexible lip in contact with the interior of the barrel and spaced from the relief valve seat portion. The relief valve further has a stem extending outwardly from the barrel and positioned for contact by the flush valve handle assembly.

REFERENCES:
patent: 174280 (1876-02-01), Mooney
patent: 2210860 (1940-08-01), Regnell
patent: 2255322 (1941-09-01), Langdon
patent: 2406259 (1946-08-01), Russell et al.
patent: 2920655 (1960-01-01), Dwyer
patent: 3428965 (1969-02-01), Achey
patent: 3435734 (1969-04-01), Bushway
patent: 3493147 (1970-02-01), Ballin
patent: 3988001 (1976-10-01), Kankaras
patent: 4261545 (1981-04-01), Allen
patent: 4327891 (1982-05-01), Allen et al.

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