702-21-57400 Solenoid Valve for Komatsu PC200-7 PC200-8 PC220-8 PC300-7 24V Product Detailed Description Maintain Peak Performance with Advanced Control Furthermore, the 702-21-57400 solenoid valve functions as a cornerstone of the Komatsu Dash-7 and Dash-8 electronic hydraulic systems. Because the valve manages the pressure signals between the pump and control valves, it directly influences the speed of your excavator’s boom and …