Bypass orifice filter for flush valve diaphragm

Details Bypass orifice filter for flush valve diaphragm Bypass orifice filter for flush valve diaphragm

1992-04-13

1993-05-25

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

137550, 138 41, 138 44, 210418, 21049701, 251 45, 251120, F16K 31145, F16K 3160

Patent

active

052133052

ABSTRACT:
A bypass orifice and filter for use in the diaphragm of a toilet room flush valve includes an orifice member adapted to be mounted in the flush valve diaphragm, and a filter element attached to the upstream side of the orifice member. The orifice member has a metering restriction to limit the flow of water therethrough and the filter element has a plurality of openings therein in communication with the orifice member metering restriction. The smallest dimension of the openings in the filter element are less than the smallest dimension of the metering restriction so that any particle in the water passing through the filter element will pass through the metering orifice. In some embodiments the orifice member and filter element are an integral unit.

REFERENCES:
patent: 1345946 (1920-07-01), Mueller
patent: 2622739 (1952-12-01), Nilsson
patent: 2776812 (1957-01-01), Colendar
patent: 2916251 (1959-12-01), Butts
patent: 4182414 (1980-01-01), Sanders et al.
patent: 4327891 (1982-05-01), Allen et al.
patent: 4693817 (1987-09-01), Goldman et al.
patent: 5102541 (1992-04-01), Breitbach

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