Flush valve refill head for controlling flow during operating cy

Details Flush valve refill head for controlling flow during operating cy Flush valve refill head for controlling flow during operating cy

1996-09-06

1997-07-22

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

138 40, 251120, F16K 31145, F16K 31385

Patent

active

056496869

ABSTRACT:
A flush valve for use on toilet devices such as urinals and water closets has a body with an inlet and an outlet and a connecting passage. There is a valve seat at one end of the passage and a diaphragm is positioned to control the flow of water through the passage and close upon the valve seat. A guide member is attached to the underside of the diaphragm and positioned within the passage. There is a refill ring attached to the guide member. The refill ring has an upstream end which is peripherally spaced from the passage when the diaphragm is closed on the valve seat. The refill ring has a downstream water flow control portion having a plurality of first water flow paths which, when the diaphragm is away from the valve seat, provide the major water flowway between the inlet and the outlet. The refill ring water flow control portion has a plurality of second water flow paths, parallel with the first water flow paths, which are formed to provide a smaller volume of flow than said first water flow paths.

REFERENCES:
patent: 1830005 (1931-11-01), Sloan
patent: 2122189 (1938-06-01), Ward
patent: 2210860 (1940-08-01), Regnell
patent: 2369104 (1945-02-01), Fredrickson
patent: 2433507 (1947-12-01), Delany
patent: 3656499 (1972-04-01), Nelson et al.
patent: 5013007 (1991-05-01), Whiteside
patent: 5150877 (1992-09-01), Whiteside et al.
patent: 5332192 (1994-07-01), Whiteside
patent: 5335694 (1994-08-01), Whiteside

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