Hydraulic Schematic Symbols - University of Alabama
https://www.me.ua.edu/me360/PDF/Industrial_Hydraulic_System_Components.pdf
Industrial Hydraulic System Components 45.2 Directional Control Valve Actuators Cam operated Manual lever Palm button Pedal Solenoid Spring centered solenoid Spring center Pilot operated Sample Directional Control Valves Manually operated, 4 way, 3 position closed center valve Double solenoid, spring centered, 4 way, 3 position, open center valve
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