DG4S4012N51

The DG4S4012N51 directional valve belongs to the DG4 Directional Valves series and is produced by Vickers for hydraulic automation circuits where precise flow direction is required. It is solenoid operated, so an energized coil shifts the internal sliding spool to open or block flow paths without manual intervention. The coil is rated for 115 VAC at 60 Hz, aligning with standard industrial mains supplies, and a flying lead coil simplifies electrical hookup when space for connectors is limited. As a 4-way unit, the spool can alternately pressurize two actuator ports while providing a return path to tank. The design omits an indicator light, meaning operational status must be monitored remotely, and it includes no manual override, which prevents unauthorized or accidental hand actuation in safety-critical installations.

The valve accommodates a maximum flow of 75.7 L/min, enabling medium-capacity cylinders or motors to operate at their designed speeds without excessive pressure loss. Its interface follows ISO 4401-05, giving dimensional interchangeability with common subplates, and gasket mounting compresses radial seals to prevent external leakage during pressure cycles. Petroleum oils serve as the working fluid, so standard mineral-based hydraulic media can be used without additives required for compatibility. For reliable service, the hydraulic circuit should be filtered so that particle contamination stays at or below ISO 20/18/15; keeping this cleanliness level minimizes spool scoring and maintains consistent shift forces. Taken together, the flow capability, standardized mounting, and fluid requirements allow the DG4S4012N51 to slot into manifolds or machine frames where continuous, electrically controlled direction changes are needed in production or mobile equipment.