Patent ID: 7100630

Claim:
A fluid supply valve to supply a fluid stream, comprising: a first valve element having a first port formed therethrough; a second valve element rotatably fixed to said first valve element and having a second port formed therethrough; a pressure balancer interposed between, and rotatable relative to, said first valve element and said second valve element, said pressure balancer having an inlet passage and an outlet passage; and a sealing disc interposed between said first valve element and said pressure balancer, said sealing disc rotatably fixed to said first valve element and having an aperture alignable with said inlet passage of said pressure balancer based on rotation of said pressure balancer to enable fluid flow therethrough; wherein said pressure balancer is rotatably positionable to a closed position such that fluid communication from said first port to said inlet passage is prohibited; and wherein said pressure balancer is rotatably positionable in a range of flow positions such that fluid communication is established in a flow path from said first port through said inlet passage and said outlet passage to said outlet port.