These directional control valves are the same as the SD5 series, except they are fitted with a pressure compensated flow regulator on the inlet port to provide fine tuning of the actuator speeds. It can also be fitted with a solenoid unloader valve which enables remote stop/start. For open and closed centre circuits. Fitted with main pressure relief. Ø16mm interchangeable spools. Available with solenoid and cable spool control.