Patent ID: 8251082

Claim:
A dual valve assembly for a toilet, the toilet having a tank and a water fill supply line, the dual valve assembly comprising a housing comprising an inlet section, such that the water fill supply line is attachable to the inlet section, a piston valve support section, and a fill valve support section oriented to a side of the piston valve support section; a fill valve, such that the fill valve is supported by the housing fill valve support section; a piston valve, supported in the housing piston valve support section, the piston valve comprising, an actuation element exposed outside of the housing piston valve support section, a water valve section, comprising a water valve, the water valve section sealed within the housing piston valve support section; and a metering orifice positioned between a first hydraulic chamber and a second hydraulic chamber, such that when the actuation element is engaged, a hydraulic fluid is forced into the first chamber where the hydraulic fluid then flows through a metering orifice into the second chamber, and the water valve is held opened while hydraulic fluid flows through the metering orifice; and a piston valve actuation arm engaging the piston valve actuation element, such that water is supplied from the water fill supply line to the piston valve and the fill valve in series.