DG4V-5-2CJ Eaton Vickers Directional Valve 120 L/min 315 Bar

Product Overview

The DG4V-5/DG4VC-5 series solenoid directional control valves (including models DG4V-5-2CJ-M-U-H5-20 and DG4VC-5-6C-M-PS2-H-7-40-JA170) are manufactured to original Eaton Vickers technical standards, covering the standard DG4V-5 and the integrated drive circuit DG4VC-5 series, both belonging to size 05 (NG10 / CETOP 5 / ISO 4401-05 / NFPA D05). The valve features a wet armature solenoid directly driving the spool in a spool valve design, with a mounting surface conforming to ISO 4401-05, used for controlling the starting, stopping, and direction of fluid flow in medium-to-high flow hydraulic systems.

The DG4V-5-2CJ-M-U-H5-20 features spool type 2CJ (all ports closed in center with metering notches), spring centered, equipped with 24 VDC wet armature solenoids, maximum operating pressure of 315 bar (4500 psi on ports P/A/B), and maximum flow of 120 L/min (32 USgpm). The DG4VC-5-6C-M-PS2-H-7-40-JA170 features spool type 6C (all ports closed in center) with an integrated solid state relay drive circuit that can be directly driven by connecting the signal terminal to a PLC. Supply voltage is 24 VDC, allowable tank port back pressure is 20.6 MPa, and maximum switching frequency is 180 cycles/min.

This product is dimensionally and functionally identical to the original Eaton Vickers DG4V-5/DG4VC-5 series valves, offering true drop-in interchangeability for direct replacement of same-specification OEM valves. Every unit undergoes 100% bench testing under simulated working conditions, including rated pressure holding, directional response verification, internal leakage measurement, and solenoid response characterization.

Technical Specifications 

General Specifications

• Model: DG4V-5-2CJ-M-U-H5-20 / DG4VC-5-6C-M-PS2-H-7-40-JA170

• Product Series: DG4V-5 (Standard); DG4VC-5 (Integrated Drive Circuit)

• Size: 05 (NG10 / CETOP 5 / ISO 4401-05 / NFPA D05)

• Design Series: 20 series

• Spool Type: 2CJ (All ports closed in center with metering notches) / 6C (All ports closed in center)

• Spring Arrangement: C (Spring centered)

• Design: Direct-acting, subplate mounting solenoid directional valve with wet armature solenoids

• Mounting Pattern: ISO 4401-05 / CETOP 5 / NFPA D05

• Installation Position: Any

Hydraulic Parameters (DG4V-5 Series)

• Maximum Operating Pressure (Ports P/A/B): 315 bar (4500 psi)

• Maximum Flow Rate: 120 L/min (32 USgpm)

• Maximum Tank Port Pressure (Port T): 160 bar (2325 psi) DC / 120 bar (1750 psi) AC

• Hydraulic Fluid: Mineral-based hydraulic oil (HL, HLP, HLPD, HVLP, HVLPD)

• Viscosity Range: 2.8 – 500 mm²/s (cSt)

• Fluid Temperature Range: -20°C to +70°C

• Filtration: ISO 4406 20/18/15 or better

• Duty Cycle: Continuous (ED = 100%)

Hydraulic Parameters (DG4VC-5 Series)

• Maximum Operating Pressure: 31.5 MPa (315 bar / 4500 psi)

• Allowable Tank Port Back Pressure: 20.6 MPa (206 bar)

• Maximum Switching Frequency: 180 cycles/min

• Hydraulic Fluid: Mineral-based hydraulic oil, water glycol

• Performance: Same as standard DG4V-5 solenoid valve

Electrical Parameters

• Supply Voltage: 24 VDC (H5/PS2-H)

• Contact Input Type: PS2 (Sink type, PN2 Source type available)

• Holding Current: 1.58 A (PS2 type, DC24V)

• Power Consumption: 38 W (DC24V)

• Solenoid Insulation Class: Class H

• Allowable Temperature: 180°C

• Electrical Connector: ISO 4400 / DIN 43650 standard connector

• Protection Class: IP65 (with standard connector)

• Coil Encapsulation: Class F

Performance Data

• Response Time (2C spool, DC solenoid, 40 L/min, 175 bar): Energizing 120 ms / De-energizing 45 ms

• Internal Leakage: Low internal leakage design

• Hysteresis: Standard performance

Materials & Construction

• Valve Body: High-strength cast iron

• Control Spool: Carburized steel, precision ground

• Seals: Viton (standard)

• Surface Treatment: Phosphating / anti-corrosion coating

Weight

• DG4V-5 single solenoid (DC coil): approx. 4.8 kg (10.6 lb)

• DG4V-5 double solenoid (DC coil): approx. 6.3 kg (13.9 lb)

• DG4VC-5 single solenoid: approx. 4.4 kg

• DG4VC-5 double solenoid: approx. 6.1 kg

Key Technical Advantages

1. Integrated Drive Circuit Design (DG4VC-5 Series) for Simplified System Architecture
The DG4VC-5-6C-M-PS2-H-7-40-JA170 features an integrated solid state relay drive circuit that allows direct connection of the signal terminal to PLCs and other controllers without external amplifiers or intermediate relays. This design significantly simplifies the electrical control system architecture, reducing cabinet space requirements and wiring workload while minimizing electromagnetic interference on signal transmission. The PS2 contact input uses Sink wiring, with allowable contact voltage of DC24V or open when the solenoid is OFF, and 0V±0.1V when the solenoid is ON, with a contact current of 10mA, compatible with mainstream PLC output modules.

2. High Flow Capacity with Wet Armature Solenoid Design
The DG4V-5 series delivers up to 120 L/min flow capacity in size 10 at 315 bar (4500 psi) maximum operating pressure. The wet armature solenoid design places the armature in hydraulic fluid, effectively reducing shifting impact noise and wear while improving heat dissipation. The maximum tank port pressure is 160 bar (2325 psi) with DC solenoids, suitable for industrial hydraulic systems with high return line back pressure.

3. Precision Spool Machining with Multiple Spool Options
The control spool is precision-ground from carburized steel with micron-level clearance control. The DG4V-5 series offers multiple spool types including 2CJ (all ports closed with metering notches) and 6C (all ports closed), meeting diverse hydraulic circuit design requirements. The metering notches provide progressive flow characteristics during spool shifting, ensuring smooth actuator movement. Optional orifice kits are available for fine tuning of valve spool speed.

4. High Power-to-Weight Ratio with Compact System Design
The DG4V-5 series features a compact design, with the single solenoid DC coil model weighing only approximately 4.8 kg. The high power-to-weight ratio, combined with Vickers sandwich valves and multi-port subplates, achieves compact and cost-effective system designs. Coil insulation is Class H with Class F encapsulation, capable of withstanding temperatures up to 180°C. Coils can be changed quickly without disturbing the hydraulic circuit.

5. 100% Simulated Working Condition Testing and Drop-in Interchangeability
Every DG4V-5/DG4VC-5 series valve undergoes 100% bench testing prior to shipment, covering 315 bar rated pressure holding, directional response time measurement, internal leakage verification, and solenoid response characterization. Mounting dimensions, port positions, electrical interfaces, and performance curves are strictly matched to the original Eaton Vickers valve, with a mounting surface conforming to ISO 4401-05, enabling direct drop-in replacement without modifying piping or control programs. The DG4V-5 series is dimensionally interchangeable with Rexroth 4WE10, Yuken DSG-03, and Parker D1VW series valves at the same CETOP 5 frame size.

Application Areas

• Injection Molding Machines: Mold opening/closing direction control, ejector system control

• Hydraulic Presses: Main cylinder directional control, fast/slow speed switching

• Machine Tools: CNC hydraulic clamping systems, tool changer control

• Construction Machinery: Excavator, loader main hydraulic circuit directional control

• Metallurgical Equipment: Continuous casting machines, rolling mill auxiliary directional control

• Marine Hydraulics: Steering gear control, deck machinery hydraulic systems

• Testing Equipment: Material testing machine hydraulic loading direction control

• Industrial Automation: Hydraulic power units, automated production line hydraulic directional control

Expert Maintenance Tips

Installation Guidelines

1. The DG4V-5/DG4VC-5 series can be mounted in any position. Mounting surface flatness must be ≤ 0.05 mm. Use M6×40 bolts (JIS B 1176, strength class 12.9) with recommended tightening torque of 12-15 N·m. The mounting surface conforms to ISO 4401-05 for direct installation on standard subplates or manifolds.

2. Thoroughly flush all piping circuits before installation. Ensure no welding slag, metal chips, or particulate contaminants remain. Prior to first operation, circulate the system through a 10 μm filter element for a minimum of 30 minutes.

3. DG4VC-5 Electrical Wiring: PS2 type uses Sink wiring. When the solenoid is OFF, the signal terminal is DC24V or open; when ON, it is 0V±0.1V. Confirm that the PLC output module type matches PS2/PN2 type.

4. Tank Port Back Pressure Management: DC solenoid tank port back pressure must not exceed 160 bar (2325 psi); AC solenoid must not exceed 120 bar (1750 psi). The DG4VC-5 series allowable tank port back pressure is 20.6 MPa.

Routine Maintenance Procedures

1. Fluid Cleanliness Management: Maintain system fluid cleanliness at ISO 4406 20/18/15 or better. Check fluid particulate contamination every 500 operating hours and replace filter elements and hydraulic fluid when contamination exceeds limits.

2. Solenoid Electrical Inspection: Periodically inspect connectors for seal integrity and terminal tightness. Measure coil resistance and replace the coil if deviation exceeds ± 10%. Coil insulation is Class H with allowable temperature of 180°C; monitor for abnormal temperature rise.

3. Shifting Performance Verification: Periodically check each position for smooth shifting and absence of binding. If shifting response becomes sluggish or internal leakage increases, inspect spool wear and fluid contamination levels.

4. Seal Replacement: Standard Viton seals offer excellent high-temperature and chemical resistance. Under normal operating conditions, replace valve seals every 3,000-5,000 operating hours.

5. DG4VC-5 Drive Circuit Inspection: Periodically check the integrated solid state relay for proper operation and ensure reliable signal terminal connection. If the PLC cannot drive the valve properly, first check that the signal terminal voltage and contact current are within allowable ranges (PS2 type: OFF at DC24V or open, ON at 0V±0.1V, contact current 10mA).