Patent ID: 6826998
Filing Date: 2004-12-07
Classification: F15B,F16K,Y10T

Abstract:
A valve, comprising:a housing having at least two sets of opposed ports offset from each other at different locations along its longitudinal length; a hollow cylinder rotatably mounted within said housing, said cylinder having at least two sets of two adjacent orifices formed at different locations along the length thereof and an open end wherethrough fluid passes, each of said sets of two adjacent orifices being positionable to align with a corresponding one of said ports for effecting fluid communication between the inside of said cylinder and the outside of said housing, said each set of two adjacent orifices being offset from the other set of two adjacent orifices so that only one pair of two adjacent orifices is aligned with a corresponding one of said ports at any one time; wherein by selectively rotating said cylinder relative to said housing, a fluid path is established between said open end of said cylinder and either set of said two adjacent orifices and its corresponding port.