Patent ID: 8087107

Claim:
A dual flush valve apparatus for refilling fluid in a toilet bowl, comprising: a flush valve configured to refill the toilet bowl with a substantially same volume of refill fluid for both a full flush and a half flush; a refill valve mounted on the flush valve, wherein the refill valve operates to direct flow either into a toilet bowl, or into a toilet tank, wherein the refill valve comprises: a fluid input coupled to a first port of the refill valve; a fluid output coupled to a second port of the refill valve, and a valve member that moves up and down along the flush valve such that: (i) when the valve member is positioned above the fluid level in the toilet tank, flow between the fluid input and the fluid output is cut off and flow is directed into the toilet tank, and (ii) when the valve member is positioned below the fluid level in the toilet tank, flow between the fluid input and the fluid output is permitted and flow is directed into the toilet bowl, and wherein the level of fluid in the bowl is refilled to a same level for both a full flush and a half flush.