That's a vital component of any modern excavator! The Solenoid Valve is essentially the electro-mechanical switch that connects the machine's electronic brain (the Controller/ECU) to its muscles (the Hydraulic System). Excavator solenoid valves are used to control the hydraulic flow in the excavator hydraulic system, excavation device control, walking system control, turntable control, and auxiliary system control. Products include: Caterpillar, John Deere, Komatsu, Case, Volvo, Hitachi, Sumitomo, Doosan, Hyundai, Liebherr, JCB, Sumitomo