Patent ID: 6260576
Filing Date: 2001-07-17
Classification: E03D,F16K,Y10T

Abstract:
A diaphragm-type of flush valve for use with toilet devices such as urinals and water closets, including a body having an inlet and an outlet, a valve seat between said inlet and outlet, and a valve member movable to a closing position on said valve seat to control water flow between said inlet and outlet, said valve member including a diaphragm peripherally attached to said body, a pressure chamber above said diaphragm with water therein holding said valve member on said valve seat,a downwardly-facing peripheral recess on the underside of said diaphragm and located generally intermediate the diaphragm outer periphery and the valve seat, a bypass orifice in said diaphragm in alignment with and communicating with said recess, and a filter ring positioned within said recess and in fluid communication with said water inlet, said filter ring having passage means therein to connect said inlet with said pressure chamber, through said orifice, to provide water for said pressure chamber to move said diaphragm to said closing position.