Outside filter for flush valve

A diaphragm-type 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 stop flow between said inlet and outlet, said valve member including a diaphragm peripherally attached to said body between facing clamping surfaces thereof, a pressure chamber above said diaphragm for holding said valve member on said valve seat,

• a filter and bypass orifice connecting said inlet and pressure chamber, said filter including a circumferential filter ring attached to the underside of said diaphragm and positioned adjacent the periphery of said diaphragm, said ring being held to said diaphragm, at least in part, by said body clamping surfaces, said ring having a plurality of circumferentially spaced filter grooves in communication with said inlet, a peripheral channel connecting said grooves, and an orifice in communication with said peripheral channel and said plurality of grooves.

A valve member assembly for use in a toilet device flush valve for closing upon a seat thereof including a diaphragm said diaphragm having an upper and a lower peripheral sealing surface for use in mounting a valve assembly within a toilet device flush valve, a filter and bypass orifice in said valve member assembly for connecting the inlet of a flush valve and a pressure chamber in the flush valve, said filter including a circumferential filter ring attached to the underside of said diaphragm and positioned directly adjacent the lower peripheral sealing surface of said diaphragm, said ring having a plurality of circumferentially spaced filter grooves adapted to be in communication with the flush valve inlet, a peripheral channel connecting said grooves, and an opening in said diaphragm in communication with said peripheral channel and said plurality of grooves.