Hitachi HPV0102 Hydraulic Pump Regulator Assembly

The HPV0102 hydraulic pump regulator (EPR Valve) serves as the primary control module for the HPV0102 series axial piston main pumps used in Hitachi and John Deere 20-ton class excavators. It manages system pressure regulation, flow control, and power limiting functions via electronic proportional solenoids. Constructed from high-strength steel and cast iron components, the regulator assembly integrates pressure cut-off valves, flow control spools, and proportional pressure reducing valves. It is engineered to maintain stable hydraulic output under varying load conditions, ensuring precise actuator response and pump longevity. The unit interfaces directly with the pump housing and the machine's electronic control unit (ECU) via a 24V DC electrical connector. This regulator assembly cross-references multiple OEM part numbers including 9152669, 9150728, 9181608, and 9198935. It is compatible with Hitachi EX200-5, EX210H-5, EX220-5, EX230-5, ZX200, ZX200-3, ZX210, ZX230, ZX240-3, and John Deere 180CW, 200LC, 210CW excavator models.