Product Overview
The DG4V-3-2A-M-P2-T-7-54, DG4V-3-7C-M-U7-52-KB10, DG4V-3-2N-M-P2-T-7-54, and DG4V-5-2AJL-M-U-H6-20 are core models in the Eaton Vickers (now Danfoss Power Solutions) DG4V series of direct-acting solenoid directional valves. The DG4V series is Eaton Vickers’ most iconic solenoid directional valve product line, with mounting patterns conforming to ISO 4401 international standards. The series is renowned for its 350 bar (5,000 psi) high pressure and wet-armature solenoid quiet operation technology.
DG4V-3-2A-M-P2-T-7-54 (NG6, 4-Way 2-Position, Spring Offset):
The DG4V-3-2A-M-P2-T-7-54 is a 4-way, 2-position solenoid directional valve featuring spring offset configuration. The spool type is 2A — all ports fully closed in neutral. Single solenoid operation—when de-energized, the spool returns to the initial position by spring force. P2 indicates plain override both ends of single solenoid. This model is 54 Design Series with T port pressure rating code 7 indicating 210 bar.
DG4V-3-7C-M-U7-52-KB10 (NG6, 4-Way 3-Position, Spring Centered):
The DG4V-3-7C-M-U7-52-KB10 is a 4-way, 3-position solenoid directional valve featuring spring centered configuration. The spool type is 7C — P port blocked, A and B ports open to T in neutral. Double solenoid operation—when de-energized, the spool automatically returns to neutral by spring force. U7 indicates 24V DC supply. KB10 is a factory internal configuration code. This model is 52 Design Series and is commonly used in concrete pump trucks.
DG4V-3-2N-M-P2-T-7-54 (NG6, 4-Way 2-Position, No-Spring Detented):
The DG4V-3-2N-M-P2-T-7-54 is a 4-way, 2-position solenoid directional valve featuring no-spring detented configuration. The spool type is 2N — the detent locks the spool in position, maintaining the position even when de-energized. This model is commonly available in the TOKIMEC (Tokyo Keiki) product line.
DG4V-5-2AJL-M-U-H6-20 (NG10, 4-Way 2-Position, Spring Offset):
The DG4V-5-2AJL-M-U-H6-20 is a 4-way, 2-position solenoid directional valve featuring spring offset configuration, Size 05 (NG10 / CETOP 5) . The spool type is 2AJL — “J” indicates a notched spool design, and “L” indicates Left Hand Build. Single solenoid operation—when de-energized, the spool returns to the initial position by spring force. U indicates ISO 4400 (DIN 43650) electrical connector. H6 coil code indicates 24V DC, 38W.
The DG4V series features wet-armature solenoid technology—the movable iron core operates fully submerged in hydraulic oil, providing lubrication and cushioning for quiet, long-life, high-reliability operation.
As original Eaton Vickers DG4V series solenoid directional valves, these products offer complete interchangeability within the same series and size.
Technical Specifications
DG4V-3 Series Common Specifications:
Brand: EATON VICKERS / DANFOSS POWER SOLUTIONS
Series: DG4V-3 Series, 54 / 52 Design
Product Type: Direct-Acting Solenoid Directional Valve
Size: NG6 / CETOP 3 / NFPA D03
Mounting Standard: ISO 4401-03
Maximum Operating Pressure P/A/B: 350 bar (5,000 psi)
Maximum Operating Pressure T: 210 bar (3,000 psi)
Maximum Flow Rate (High Performance): 80 L/min (21 GPM)
Maximum Flow Rate (Standard Performance): 40 L/min (10.5 GPM)
Minimum Pressure Drop: 2.5 bar @ 30 L/min
Protection Class: IP65 (with properly installed connector)
Seal Material: Buna-N (NBR) standard / Viton optional
Compatible Fluids: Petroleum-based hydraulic oil
Operating Temperature Range: -20°C to +70°C
Recommended Cleanliness: ISO 4406 19/17/14
DG4V-5 Series Common Specifications:
Brand: EATON VICKERS / DANFOSS POWER SOLUTIONS
Series: DG4V-5 Series, 20 Design
Product Type: Direct-Acting Solenoid Directional Valve
Size: NG10 / CETOP 5 / NFPA D05
Mounting Standard: ISO 4401-05
Maximum Operating Pressure P/A/B: 315 bar (4,500 psi)
T Port Max. Pressure (DC): 160 bar (2,325 psi)
T Port Max. Pressure (AC): 120 bar (1,750 psi)
Maximum Flow Rate: 120 L/min (32 GPM)
Protection Class: IP65 (with properly installed connector)
Seal Material: Buna-N (NBR) standard / Viton optional
Compatible Fluids: Petroleum-based hydraulic oil
Operating Temperature Range: -20°C to +70°C
Coil Insulation Class: Class H
Coil Encapsulation Class: Class F
DG4V-3-2A-M-P2-T-7-54 Specifications:
Model: DG4V-3-2A-M-P2-T-7-54
Spool Configuration: 4-way, 2-position
Spring Arrangement: Spring Offset
Spool Type: 2A (closed center, all ports blocked)
Solenoid Configuration: Single Solenoid
Manual Override: Dual (P2)
Design Series: 54 Series
T Port Rating: 7 = 210 bar
DG4V-3-7C-M-U7-52-KB10 Specifications:
Model: DG4V-3-7C-M-U7-52-KB10
Spool Configuration: 4-way, 3-position
Spring Arrangement: Spring Centered
Spool Type: 7C (P blocked, A&B to T in neutral)
Solenoid Configuration: Double Solenoid
Coil Voltage: 24V DC
Electrical Connection: ISO 4400 (DIN 43650)
Design Series: 52 Series
Option Code: KB10
DG4V-3-2N-M-P2-T-7-54 Specifications:
Model: DG4V-3-2N-M-P2-T-7-54
Spool Configuration: 4-way, 2-position
Spring Arrangement: No-Spring Detented
Spool Type: 2N (closed center, with detent)
Solenoid Configuration: Single Solenoid
Manual Override: Dual (P2)
Design Series: 54 Series
Feature: Memory switching without continuous coil power
DG4V-5-2AJL-M-U-H6-20 Specifications:
Model: DG4V-5-2AJL-M-U-H6-20
Spool Configuration: 4-way, 2-position
Spring Arrangement: Spring Offset
Spool Type: 2AJL (closed center, notched spool, Left Hand Build)
Solenoid Configuration: Single Solenoid
Coil Voltage: 24V DC
Power Consumption: 38 W
Coil Code: H6 (24V DC, 38W)
Electrical Connection: ISO 4400 (DIN 43650)
Manual Override: Water Resistant
Design Series: 20 Series
Weight: Single solenoid 4.8 kg
Key Technical Advantages
1. Wet-Armature Solenoid Design for Quiet, Long-Life Operation
The DG4V series features Eaton Vickers‘ proven wet-armature solenoid technology—the movable iron core operates fully submerged in hydraulic oil, providing lubrication to reduce wear and cushioning against switching impact and vibration. Compared to dry-armature designs, the wet-type configuration delivers lower noise, longer service life, and higher reliability. Coils can be changed quickly and easily without leakage from the hydraulic system.
2. Multiple Spool Functions and Spring Configurations for Flexible Adaptation
DG4V-3-2A-M-P2-T-7-54 features Type 2A spring offset — ideal for single-solenoid directional control with automatic return upon de-energization. DG4V-3-7C-M-U7-52-KB10 features Type 7C spring centered — P blocked, A&B to T in neutral for actuator floating positioning. DG4V-3-2N-M-P2-T-7-54 features Type 2N no-spring detented — maintains position even when de-energized for memory switching. DG4V-5-2AJL-M-U-H6-20 features Type 2AJL with notched spool — the “J” notch optimizes shifting characteristics and reduces switching shock.
3. 350 bar / 315 bar High Pressure with 80 / 120 L/min Flow Capacity
DG4V-3 series delivers 350 bar (5,000 psi) peak operating pressure and 80 L/min (21 GPM) flow capacity in a compact NG6 valve body. DG4V-5 series delivers 315 bar (4,500 psi) operating pressure and 120 L/min (32 GPM) flow capacity in an NG10 valve body.
4. Manual Override and IP65 Protection
DG4V-3-2A-M-P2-T-7-54 and DG4V-3-2N-M-P2-T-7-54 feature dual manual override (P2) . DG4V-5-2AJL-M-U-H6-20 features Water Resistant Manual Override. IP65 protection is achieved with properly installed connector.
5. International Standard Compliance for Global Interchangeability
DG4V-3 series mounting conforms to ISO 4401-03 / CETOP 3 standards. DG4V-5 series mounting conforms to ISO 4401-05 / CETOP 5 standards. Fully compatible with globally adopted interfaces for direct replacement of same-series, same-specification products.
6. Notched Spool Design for Optimized Shifting Characteristics (DG4V-5-2AJL-M-U-H6-20)
The “J” notched spool design is available on DC models only, optimizing spool metering characteristics to effectively reduce switching shock and improve system smoothness. The “L” Left Hand Build provides flexibility for special installation layouts.
Application Areas
DG4V-3-2A-M-P2-T-7-54 (4-way, 2-position, spring offset, NG6):
Hydraulic Power Units (HPU) — Directional control and flow switching
Unloading Circuits — System unloading and pressure release control
Safety Interlock Devices — Control circuits that automatically return to a safe state when de-energized
CNC Machine Tools — Directional control for hydraulic actuators
DG4V-3-7C-M-U7-52-KB10 (4-way, 3-position, spring centered, NG6):
Concrete Pump Trucks — Pumping system hydraulic directional control
Injection Molding Machinery — Directional control for clamping, injection, and ejection cylinders
Hydraulic Presses and Forging Equipment — Press slide directional control
Construction Machinery — Directional control for mobile equipment
DG4V-3-2N-M-P2-T-7-54 (4-way, 2-position, no-spring detented, NG6):
Actuator Position Holding — Applications requiring position maintenance when de-energized
Fixture and Jig Systems — Workpiece clamping state holding control
Memory Circuits — Hydraulic systems requiring retention of last operating state
Safety Interlocks — Control circuits requiring safety state maintenance when de-energized
DG4V-5-2AJL-M-U-H6-20 (4-way, 2-position, spring offset, notched, NG10):
Injection Molding Machinery — High-flow directional control for clamping, injection, and ejection cylinders
Construction Machinery — High-flow hydraulic directional control for excavators, loaders, and mobile equipment
Hydraulic Presses and Forging Equipment — High-flow directional control for presses and forming equipment
Die-Casting Machines — High-flow directional control for high-pressure casting equipment
Expert Maintenance Tips
1. Installation Guidelines
DG4V-3 series mounting must conform to ISO 4401-03 / CETOP 3 / NFPA D03 standards.
DG4V-5 series mounting must conform to ISO 4401-05 / CETOP 5 standards.
Thoroughly clean the mounting surface and all ports (P, A, B, T) before installation to prevent foreign particles from entering and causing spool sticking or seal damage.
Tighten mounting bolts evenly to the specified torque to ensure proper sealing between the valve body and mounting surface.
2. Hydraulic Fluid Cleanliness
Recommended fluid cleanliness: ISO 4406 19/17/14 or better.
Compatible fluids: Petroleum-based hydraulic oil. For phosphate ester and other specialty fluids, select Viton (FKM) seal option.
Operating temperature range: -20°C to +70°C.
Install a return line filter with minimum 10 μm filtration rating.
3. Electrical Connection Specifications
DG4V-3-2A-M-P2-T-7-54 and DG4V-3-2N-M-P2-T-7-54 voltage varies by configuration—verify coil nameplate voltage matches supply voltage before connection.
DG4V-3-7C-M-U7-52-KB10 uses 24V DC supply.
DG4V-5-2AJL-M-U-H6-20 uses 24V DC supply with power consumption of 38 W.
Electrical connector: ISO 4400 (DIN 43650) standard. Ensure the connector is fully locked to maintain IP65 protection.
4. Spool Type Usage Considerations
Type 2A (spring offset) : Single solenoid operation with automatic spring return. Suitable for safety return control circuits.
Type 7C (spring centered) : P blocked, A&B to T in neutral—actuator floats freely in neutral.
Type 2N (no-spring detented) : Spool locked by detent in shifted position—maintains position even when de-energized. Exercise caution during manual override—be aware of the detent lock state.
Type 2AJL (notched spool, Left Hand Build) : “J” notch optimizes shifting characteristics; “L” Left Hand Build means solenoid positions are reversed compared to standard models.
5. Periodic Maintenance Inspection
Inspect the valve body for external oil leakage every 2,000 operating hours or at least annually.
Check electrical connectors for looseness, oxidation, or moisture ingress.
Wet-armature solenoid coils can be replaced quickly without disturbing hydraulic connections.
If response lag or unstable shifting is observed, first check system fluid cleanliness and verify the spool is not sticking.
