Home › Collections › Directional Control Valves

Directional Control Valves

Directional control valves switch pressurized fluid between circuit paths, governing extension, retraction, and position hold for hydraulic cylinders and actuators throughout industrial fluid power systems. PLC Direct stocks Vickers directional control valves from independent suppliers as surplus sealed, refurbished, and used replacement hardware.

Where Are Directional Control Valves Used in Industrial Environments?

Directional control valves are the primary switching element in industrial hydraulic circuits, installed wherever cylinders or actuators must change direction, hold position, or transition between operating modes. They appear across every sector that uses fluid power actuation, from discrete manufacturing to heavy process and mobile equipment.

Facilities and operations that depend on directional control valves include:

Metal stamping and press operations, where solenoid directional valves sequence cylinder advance, hold, and retract across each forming stroke.

Plastic injection molding machinery using directional control valves to sequence clamp, inject, and eject phases in timed cycles.

Steel mills and continuous casting lines where directional valves route flow to roll gap actuators and strip guide systems.

Material handling and crane equipment using hydraulic directional valves to control hoist, traverse, and gripper cylinder functions.

Mobile and agricultural equipment where directional valve banks manage boom, bucket, and blade actuator circuits simultaneously.

A failed directional control valve stops its circuit immediately, making spool type, coil voltage, and valve series all essential to confirm before ordering a replacement.

Which Brands of Directional Control Valves Does PLC Direct Stock?

PLC Direct stocks Vickers directional control valves across four confirmed product families, sourced through independent suppliers.

Vickers DG4V-3 series solenoid directional control valves: Size 3 subplate-mounted hydraulic spool valves for industrial directional switching across a wide range of spool configurations and coil voltage options.

Vickers DG4V-5 series solenoid directional control valves: Size 5 subplate-mounted valves for higher-flow circuits where DG4V-3 frame sizing is insufficient for the required flow capacity.

Vickers DG5S series pilot-operated directional control valves: Pilot-operated spool valves for high-flow circuits where direct solenoid actuation of the main spool is not practical.

Vickers KHDG5V series high-pressure directional control valves: High-pressure directional spool valves for circuits requiring elevated pressure ratings beyond standard DG4V series specifications.

All listed hardware is available as surplus sealed, refurbished, and used. Contact PLC Direct for part-level availability and current pricing.

What Should You Know Before Ordering Directional Control Valves?

Hardware condition options: Surplus sealed units are unused and in original manufacturer packaging. Refurbished units have been inspected and restored to functional operating condition. Used units are tested and operational, with conditions stated on each product listing.

Compatibility and part identification: Directional control valves must be matched by body size, spool configuration, actuation type, and coil voltage, all of which are encoded in the Vickers model code. Substituting a valve with a different spool type results in incorrect cylinder motion, even if the body is physically compatible with the installed unit.

Warranty: All directional control valve hardware purchased from PLC Direct carries a standard 1-year warranty covering defects and functionality, applicable to surplus sealed, refurbished, and used products. PLC Direct supplies directional control valve hardware for replacement and maintenance purposes and does not provide system design, programming, or integration services.

Frequently Asked Questions

A directional control valve routes pressure to one cylinder port while connecting the opposing port to the tank, producing extension or retraction on demand. The center spool position can hold the cylinder stationary or connect it to the tank or float both ports, depending on the selected spool type.

Center-blocked spools hold the actuator in position when de-energized, making them standard for clamping and pressing circuits that must maintain load without continuous solenoid power. Tandem-center spools connect the pump to the tank and both cylinder ports to the tank between cycles, unloading the power unit in applications with intermittent actuation demand.

PLC Direct stocks Vickers directional control valves across the DG4V-3, DG4V-5, DG5S, and KHDG5V series through independent suppliers. Contact PLC Direct to confirm current availability and condition grade for specific part numbers.

Vickers DG4V solenoid valves are available with multiple AC and DC coil voltages, with the specific voltage encoded in the model number suffix. A coil voltage mismatch causes the solenoid to fail to actuate or burn out on startup, so the installed voltage must be confirmed from the machine's electrical schematic before ordering.

Direct-acting solenoid directional valves such as the DG4V series shift the main spool via solenoid force, making them suited to low-to-medium flow circuits with fast response requirements. Pilot-operated valves such as the DG5S use solenoid-controlled pilot pressure to shift a larger main spool, enabling high-flow directional control without requiring proportionally larger solenoid forces.