Main Control Valve / Distributor for Hitachi ZAX330-3G ZAX350-3G ZAX360-3G Direct Injection Excavator Part No 9214478 4433970 Installation & Verification Guidelines Verify Hitachi part number and confirm main control valve assembly compatibility, including boom, arm, bucket, travel, swing spools, relief valves, and holding valves New or remanufactured valves must include hydraulic bench test reports for pressure, flow, and internal leakage of each section For remanufactured