Vickers Size 5 (NG 10) Directional Control Valves

The DG4S4-01-60-S*** directional control is a solenoid operated, 4-way, soft-shift valve having a unique five-chamber design. The spool end land configuration isolates the core tube volume from the valve ’s tank cavity. This volume is displaced through an orifice in each solenoid armature to increase the shift and dropout periods.

System shock is greatly reduced by metering the flow across the special spool land as well as spool modulation produced by the armature orifice. The valve terminal box contains a bridge rectifier, allowing alternating current to be applied directly to the valve.
Therefore, the solenoid winding senses only direct current, eliminating the “in-rush ” characteristic of a standard AC solenoid.