Patent ID: 6736161
Filing Date: 2004-05-18
Classification: F16K,Y10T

Abstract:
A pressure regulating valve, comprising:a valve body having an axis, comprising: at least one inlet opening in a sidewall of the valve body, such inlet opening extending along an inlet axis, such inlet axis being disposed perpendicular to the axis of the body; at least one outlet opening in a sidewall of the valve body, such outlet opening extending along an outlet axis, such outlet axis being disposed perpendicular to the axis of the body; an internal cavity connecting said inlet and outlet openings, such inlet and outlet openings extending from the internal cavity to a region external of the valve body; a bottom portion having an opening with a cross-section that is smaller than a cross-section of said internal cavity; a valve seat positioned in said internal cavity of said valve body between said inlet and outlet openings; a piston slidable along the body axis in said internal cavity; and a spring, one end of which maintains said piston in a closed position against said valve seat wherein the other end of said spring is in contact with said bottom portion of said valve body; wherein the pressure pulses in a pressurized medium entering said valve are propagated through said outlet opening and said bottom portion opening, to the back of said piston in order to dampen piston oscillations; wherein said piston is cup-shaped; wherein said inlet and outlet openings are separated along the body axis in said valve body between its outer periphery and said internal cavity; and wherein the opening in the bottom extends along an axis co-directional with axis of the body and the motion of the piston, such opening in the bottom extending from the internal cavity to a region external of the valve body.