Vickers DG4V-3 Series Solenoid Valve | DG4V-3-2A DG4V-3-2B DG4V-3-22A | Directional Control Valve | DC24V H7 Connector

Chengyuan Hydraulic presents the DG4V-3 Series solenoid directional valves, meticulously engineered as high-performance replacements for the original Vickers industrial standards. This range covers key spool functions including DG4V-3-2A, DG4V-3-2B, and DG4V-3-22A, essential for direction control in diverse hydraulic circuits. As the central switching component of hydraulic systems, Chengyuan’s DG4V-3 series utilizes a wet-armature solenoid design, ensuring high reliability under 350 bar operation. We guarantee 100% Drop-in Interchangeability regarding the ISO 4401-03 mounting interface, electrical connectors (H7 DIN), and hydraulic logic. Every valve undergoes 100% Simulation Load Testing to ensure that flow characteristics and switching response times meet or exceed industry-leading standards.

Technical Specifications 

• Model Codes: DG4V-3-2A / DG4V-3-2B / DG4V-3-22A (60 Design)

• Nominal Size: NG6 (CETOP 3 / ISO 4401-03)

• Max Operating Pressure (P/A/B Ports): 350 Bar (5075 psi)

• Max Tank Port Pressure (T Port): 210 Bar

• Maximum Flow Rate: Up to 80 L/min (Depending on spool and pressure)

• Solenoid Voltage: G (DC 24V) / AC options available

• Electrical Connection: H7 (DIN 43650 ISO 4400)

• Seal Material: NBR (Standard)

• Weight: Approx. 1.9 kg (Double solenoid) / 1.5 kg (Single solenoid)

Key Technical Advantages:

• Enhanced Wet-Armature Solenoids: The moving parts are completely immersed in oil, providing superior cooling and eliminating dynamic seal friction. This significantly reduces actuation resistance and extends the service life of the coils up to 20 million cycles.

• High-Strength Cast Body: The body is cast from high-strength compacted graphite iron with CFD-optimized internal passages. This design minimizes pressure drops and prevents structural fatigue under high-pressure alternating loads.

• Precision-Ground Spool Fit: Spools are crafted from heat-treated alloy steel and precision-ground to achieve micron-level fit. This ensures sensitive switching while minimizing internal leakage to maintain system efficiency.

• Optimized Shock Damping: The spool end geometry is designed to dampen hydraulic shocks during switching, reducing system vibration and noise while protecting downstream components.

Application Areas:

• Machine Tools: Directional control for grinding machines, milling machines, and automated transfer lines.

• Plastic Machinery: Motion switching and mold protection for small-to-medium injection molding machines.

• Mobile Equipment: Auxiliary hydraulic systems and actuator control for service vehicles.

• Industrial Presses: Logic control for waste balers and compact hydraulic punching machines.

Expert Maintenance Tips:

• Electrical Connector Integrity: When installing the H7 DIN plug, ensure the waterproof gasket is properly seated and the center bolt is tightened to prevent coolant or oil from shorting the coil.

• Filtration Standards: Maintain oil cleanliness at ISO 4406 18/16/13 or better. Fine metallic particles can scratch the spool surface, impairing switching precision and increasing leakage.

• Manual Override Protocol: The valve ends feature manual override buttons. When using manual actuation during commissioning, ensure system pressure is within safe limits. Avoid frequent manual use during high-pressure cycles.