Patent ID: 6631738
Filing Date: 2003-10-14
Classification: F16K

Abstract:
A valve comprising:a housing having at least first and second walls that define a cavity therein, said cavity being configured such that a cross-sectional area of said cavity taken perpendicular to a longitudinal axis of the cavity decreases from the second wall to the first wall; a port in the first wall for allowing material to enter or exit the cavity; a port in the second wall for allowing material to enter or exit the cavity; a flow restrictor disposed in the cavity, and being freely moveable between a first position in contact with the first wall, and a second position in contact with the second wall; a large flow area past the flow restrictor in the first position, and small flow area past the flow restrictor in the second position; and the flow restrictor is a ball and wherein a center of each of said ports is offset from a centerline of the ball relative to the longitudinal axis of the cavity.