Pilot valves

The pilot control valves are 2/2-way or 3/2-way valves. They are primarily designed for operating larger valves.
A flanged-on solenoid converts electrical energy into mechanical energy via a magnetic coil with plunger which, in turn, actuates the directional control valves. Hydraulic control systems can thus be actuated indirectly electrically, hydraulically, pneumatically, or mechanically.