Fluid flow stop valve

Claim 1

A stop valve for use with a faucet or shower head, said valve comprising a body member having a fluid inlet, means adjacent said inlet for securing said body member to said faucet or shower head, a fluid outlet, a constant radius cylindrical fluid chamber extending transversely through said body member, a first passageway communicating said valve chamber with said fluid inlet, a second passageway communicating said valve chamber with said fluid outlet, a cylindrical valve member slidably mounted within said chamber and having an intermediary portion of reduced cross-sectional diameter, a pair of sealing members carried by said valve member externally adjacent each end of said intermediary portion of said valve member such that upon urging said valve member to a first position, said first passageway communicates with said second passageway about said intermediary portion of said valve member and upon urging said valve member to a second position, one of said sealing members seals said fluid outlet from said valve inlet preventing fluid flow through said stop valve, and a third sealing member carried by said valve member and spaced outwardly from said one sealing member, said one sealing member having a larger cross-sectional diameter than the remaining two sealing members.