Patent ID: 6871835

Claim:
A flush control valve comprising a housing; a first fluid conduit extending into the housing; a tube mounted in the housing in axial alignment with the first fluid conduit, said tube having an interior flange defining a valve seat; a second fluid conduit extending into the housing, said second fluid conduit being in fluid communication with the interior of said tube adjacent to the valve seat; a valve member movable within the tube between an open position wherein the valve member allows fluid to flow from the first conduit along the tube past the valve seat and a closed position wherein the valve member seats against the valve seat stopping the flow of fluid along the tube past the valve seat; biasing means for biasing the valve member toward the closed position; a valve assembly for seating at a home position in the housing, said valve assembly including a tubular member slidably received in said tube, said tubular member having a first end engaging the valve member and a second end defining a second valve seat, said tubular member maintaining the valve member in said open position so long, as the valve assembly is at said seated position thereby establishing a fluid flow path between the second conduit and the tubular member to the second valve seat, and valve means for controlling the fluid flow from the tubular member past the second valve seat; means in the housing defining a fluid flow path between the second valve seat and the first fluid conduit, and a retainer for releasably retaining the valve assembly in said seated position whereby when said retainer is loosened thereby releasing the valve assembly, the valve member will be moved automatically by the biasing means to said closed position.