Patent ID: 6742540
Filing Date: 2004-06-01
Classification: F16K,Y10T

Abstract:
A two-way orifice check valve device for a hydraulic circuit, comprising: an orifice check valve, said orifice check valve comprising:a cylindrical body part movably installed within a first pressure chamber of an inlet conduit; first and second orifices formed on both ends of said body part, respectively; a conduit communicating between said first and second orifices; a plurality of elongate projections formed around an outside circumference of said body part, for forming a plurality of flow paths between said body part and said first pressure chamber; and an access allowing communication between the elongate projections, through said body part, to said conduit; and a pressure relief valve, said pressure relief valve comprising: a second pressure chamber communicating to an outlet conduit and disposed adjacently to said first pressure chamber; and a valve element having an axial flow path disposed within said second pressure chamber and elastically supported by a return spring.