Vickers DG4V-3 DG4V-5 Solenoid Valve | DG4V-3-6A DG4V-5-2CJ Directional Control Valve

The DG4V Series solenoid directional control valves (Size 3 & Size 5) manufactured by Chengyuan Hydraulic are high-performance components designed for precise fluid management in automated industrial systems. Fully compliant with ISO 4401 standards, these valves provide 100% original-place interchangeability with Vickers products. At Chengyuan, we utilize advanced wet-armature solenoid technology for smoother actuation and longer service life. Every unit is subjected to 100% simulated condition testing at pressures up to 35 MPa, guaranteeing zero-leakage performance and high-frequency switching reliability for machine tools, plastic machinery, and mobile equipment.

Technical Specifications (Bulleted List)

• Series: DG4V-3 (NG6) / DG4V-5 (NG10)

• Featured Models: DG4V-5-2CJ-M-U-H7-29, DG4V-3-6A-M-P2-T-7-54

• Max Working Pressure (P/A/B): $35\text{ MPa (5076 psi)}$ for DG4V-3; $31.5\text{ MPa}$ for DG4V-5

• Max Tank Port (T) Pressure: $21\text{ MPa}$ (DC); $16\text{ MPa}$ (AC)

• Max Flow Rate (DG4V-3): Up to $80\text{ L/min}$

• Max Flow Rate (DG4V-5): Up to $120\text{ L/min}$

• Control Voltage: 24V DC, 110V AC, or 220V AC options

• Electrical Connection: DIN 43650 (U type) or Terminal Box (H type)

• Ingress Protection: IP65 Rated

Key Technical Advantages

• Wet-Armature Solenoid Design: The armature moves within a sealed oil-filled tube, providing natural damping and lubrication. This eliminates the need for dynamic seals, significantly reducing noise and extending the switching fatigue life.

• Optimized Low-ΔP Flow Path: The internal valve body is engineered via flow simulation to minimize pressure drops between ports. This results in higher system efficiency and reduced heat generation during high-flow operations.

• Micron-Level Spool Precision: Spools are crafted from high-alloy steel with deep nitriding and precision grinding. This ensures a micron-level fit with the bore, resulting in minimal internal leakage and preventing spool “stiction” under high-pressure conditions.

• 100% Simulation Tested: Every DG4V valve undergoes thousands of switching cycles at maximum rated pressure before shipment. This ensures out-of-the-box reliability and seamless integration into critical production environments.

Application Areas

• Industrial Machine Tools: Workpiece clamping and table reciprocation for grinders and CNC centers.

• Plastic Machinery: Auxiliary circuit control and ejector mechanisms for injection molding machines.

• Material Handling: Hydraulic outriggers and control circuits for port machinery and heavy-duty forklifts.

Expert Maintenance Tips

• Manual Override: Use the manual push-pin at the end of the solenoid for troubleshooting; however, always ensure it is released before returning to automatic electrical control.

• T-Port Backpressure: Verify that the system’s tank-line backpressure does not exceed the rated limit, as excessive pressure can impede solenoid performance and spool return.

• Environmental Protection: For equipment operating in humid or dusty conditions, utilize the DIN connector with proper gasket sealing to maintain IP65 integrity.