Flush valve filter and bypass orifice

Details Flush valve filter and bypass orifice Flush valve filter and bypass orifice

1993-05-24

1994-07-26

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

137544, 138 40, 251120, F16K 31385, F16K 31145

Patent

active

053321928

ABSTRACT:
A diaphragm-type of flush valve for use with toilet devices such as urinals and water closets has a body with an inlet and an outlet and a valve seat therebetween. There is a valve member movable to a closing position on the valve seat to stop flow between the inlet and the outlet. The valve member includes a diaphragm peripherally attached to the body, a refill ring attached to the diaphragm for controlling water flow to the outlet and a retaining disc which is used to attach the refill ring to the diaphragm. There is a pressure chamber above the diaphragm for holding the valve member on the valve seat. A filter and bypass orifice connect the inlet and the pressure chamber, with the bypass orifice being formed in the retaining disc and the filter being formed in part by a portion of the diaphragm.

REFERENCES:
patent: 1114398 (1914-10-01), Sloan
patent: 2270259 (1942-01-01), Burke
patent: 2776812 (1957-01-01), Colendar
patent: 3207467 (1965-09-01), Buhler
patent: 3656499 (1972-04-01), Nelson et al.
patent: 4261545 (1981-04-01), Allen
patent: 4817913 (1989-04-01), Whiteside
patent: 4883254 (1989-11-01), Whiteside
patent: 5013007 (1991-05-01), Whiteside

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