As a common type of on-off solenoid, the hydraulic solenoid for Yuken on-off solenoid valves is used for Yuken solenoid operated directional valves size 6 and 10. It is a wet armature solenoid. Like Rexroth hydraulic solenoid, the hydraulic solenoid for Yuken on-off solenoid valves can be both applied to AC power system and DC power system.