OEM-quality proportional solenoid valve for Kobelco SK230-6E and SK210LC-6E excavators. Part KDRDE5K-31/30C50-140 with Green Dot marking operates at 24V. Controls proportional hydraulic flow for boom, arm, and swing operations with precision regulation that Kobelco’s advanced proportional systems demand for smooth machine performance, efficient digging cycles, and reliable productivity on all job sites.