Komatsu Excavator Main Control Valve - Part 723-46-23103 The part number for the Komatsu PC200-8, PC210-8, PC220-8, CPC240-8, and PC270-8 excavator main control valve is 723-46-23103. Related part numbers include 723-46-23101 and 723-46-23102. Key Features Well-manufactured valve body with reliable sealing performance Stable flow output for consistent hydraulic operation Available in new or rebuilt condition Direct replacement for original parts - no pipe modification