Flush valve refill ring

Details Flush valve refill ring Flush valve refill ring

1992-02-11

1992-09-29

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 38, 251120, 251123, F16K 31385, F16K 31145

Patent

active

051508770

ABSTRACT:
A flush valve body has a passage which connects the inlet and outlet. 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 to close upon the seat. A guide member is attached to the underside of the diaphragm and a refill ring is attached to the guide member. The improvement is specifically directed to the exterior of the refill ring which has a plurality of recesses to channel the flow of water through the flush valve passage. The recesses have a portion of constant size and a portion of gradually changing size. There are fins which separate the recesses and the fins are always in contact with the interior of the passage. The stroke of the diaphragm when moving between fully open and fully closed positions is approximately one-half of the axial length of the refill ring.

REFERENCES:
patent: 2012255 (1935-08-01), Binnall
patent: 3656499 (1972-04-01), Nelson et al.
patent: 5013007 (1991-05-01), Whiteside

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