Electrohydraulic valve arrangement

An electrohydraulic valve arrangement including a valve body having a bore and first and second annular ports axially spaced along and opening into the bore, and an electrohydraulic displacement controlled valve module disposed in the bore for controlling fluid flow between the first and second annular port, the electrohydraulic valve module comprising:

• a main valve element slideably disposed within the bore and having an annular groove continuously communicating with the first annular port;
• a spring biasing the main valve element to a closed position blocking communication between the annular groove and the second annular port;
• an actuating chamber defined at one end of the main valve element and adapted to receive pressurized pilot fluid for urging the main valve element toward an open position communicating the first and second annular ports through the annular groove;
• an inlet port communicating with the actuating chamber;
• a control chamber disposed at the other end of the main valve element;
• passage means for communicating the actuating chamber with the control chamber and including an orifice disposed between the actuating chamber and the control chamber;
• an outlet port communicating with the control chamber and defining an annular valve seat;
• a poppet disposed within the control chamber;
• a feedback spring disposed between the main valve element and the poppet and biasing the poppet into sealing engagement with the annular valve seat;
• and
• a proportional electromagnetic device suitably connected to the valve body for controlling the position of the poppet relative to the valve seat to control the fluid pressure in the control chamber.