CONTROL VALVE FOR DOUBLE-ACTING PISTON AND VALVE ASSEMBLIES

摘要

Improved Control Valve for Double-Acting Piston and Cylinder Assemblies An improved control valve for double-acting piston and cylinder assemblies is disclosed in which pressure for actuating a regeneration valve to direct hydraulic fluid from the contracting side of the piston to the expanding side, is controlled by a cylindrical check valve apparatus (86 - 112) which surrounds the valve plunger and controls the pressure of fluid flowing from the contracting side to the reservoir.