DG4V-3S-6C-M-U-B5-60 Eaton Vickers Solenoid Valve 40 L/min 350 Ba

Product Overview

The DG4V-3S-6C series solenoid directional control valve (including models DG4V-3S-6C-M-U-B5-60, DG4V-3S-6C-M-U6-D5-60, and DG4V-3S-0C-M-U6-D5-60) is manufactured to original Eaton Vickers technical standards. Belonging to the DG4V-3S series with size 03 (NG6 / CETOP 3 / ISO 4401-03), this valve is a wet armature solenoid operated, subplate mounting directional control valve specifically designed for mobile equipment and industrial hydraulic systems. The valve is used for directing and stopping flow at any point in a hydraulic system, providing precise directional control of hydraulic actuators.

The DG4V-3S series is Eaton Vickers’ standard-performance solenoid directional valve with a maximum flow of 40 L/min (10.5 USgpm) and P/A/B port pressure rating of 350 bar (5075 psi). Its tank port is rated to 210 bar (3000 psi), making it ideal for mobile equipment applications with high return line back pressure. This product is dimensionally and functionally identical to the original Eaton Vickers DG4V-3S series valve, with a mounting surface conforming to ISO 4401-03 (CETOP 3 / NFPA D03), 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-3S-6C-M-U-B5-60 / DG4V-3S-6C-M-U6-D5-60 / DG4V-3S-0C-M-U6-D5-60

• Product Series: DG4V-3S (Size 03 / NG6 / CETOP 3 / ISO 4401-03)

• Design Series: 60 Design

• Spool Type: 6C (P blocked, A & B open to T in center) / 0C (All ports closed in center)

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

• Ways/Positions: 4-way, 3-position, spring centered

• Mounting Pattern: ISO 4401-AB-03-4-A / CETOP 3 / NFPA D03 / ANSI B93.7

• Installation Position: Any

Hydraulic Parameters

• Maximum Flow Rate: 40 L/min (10.5 USgpm)

• Maximum Operating Pressure (Ports P/A/B): 350 bar (5075 psi)

• Maximum Tank Port Pressure (Port T): 210 bar (3000 psi)

• Hydraulic Fluid: Mineral-based hydraulic oil (petroleum oil recommended)

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

• Fluid Temperature Range: -20°C to +70°C (-4°F to +158°F)

• Ambient Temperature Range: -20°C to +70°C (-4°F to +158°F)

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

• Duty Cycle: Continuous (ED = 100%)

• Internal Leakage: Standard performance

• Response Time (DC solenoid, 2C spool, 20 L/min, 175 bar): Energizing 60 ms / De-energizing 40 ms

Electrical Parameters

• Supply Voltage: DG4V-3S-6C-M-U-B5-60: 110/120 VAC 50/60 Hz (B5); DG4V-3S-6C-M-U6-D5-60: 120/60 VAC (D5)

• Voltage Tolerance: Minimum 90% rated voltage

• Solenoid Type: Wet armature solenoid with interchangeable coil

• Coil Winding Insulation: Class H

• Coil Encapsulation: Class F

• Electrical Connector: ISO 4400 / DIN 43650 connector (U type)

• Protection Class: IP65 (with standard connector)

• Molded-in surge suppressor/diodes available to protect PLCs or circuit boards from back EMF

• LED indicator lights available

Materials & Construction

• Valve Body: High-strength gray iron

• Control Spool: Carburized steel, precision ground

• Seals: Buna-N (standard)

• Surface Treatment: Phosphating / anti-corrosion coating

Weight

• Single solenoid models: approx. 1.6 kg (3.5 lb)

• Double solenoid models: approx. 2.2 kg (4.8 lb)

Key Technical Advantages

1. High Tank Line Pressure Rating for Mobile Equipment
The key advantage distinguishing the DG4V-3S series from the standard DG4V-3 is its high tank line pressure capability. The tank port can withstand pressures up to 210 bar (3000 psi), making it an ideal replacement for DG4V-3 in high tank line pressure applications. This characteristic makes it particularly suitable for mobile hydraulic systems such as construction machinery and aerial work platforms, where long return lines and series-connected multi-way valves often create high return line back pressure.

2. Wet Armature Solenoid Design for High Reliability
The DG4V-3S series employs a wet armature solenoid design where the armature operates in hydraulic fluid, effectively reducing shifting impact noise and wear. Solenoid coils can be changed quickly and easily without leakage from the hydraulic system, significantly reducing downtime and maintenance costs. The product has been tested and meets key OEM specifications regarding temperature, vibration, heat rise/drop, impact test, water dunk (thermal shock and hermetic seal), salt spray, and dielectric strength test.

3. New Coil Design for High Thermal Shock and Impact Resistance
The DG4V-3S series features a new coil design with a frame around the coil that ensures high strength and allows the frame to expand/contract without added stress, providing excellent thermal shock and impact resistance. Coils are available with molded-in surge suppressor/diodes to protect PLCs or circuit boards from back electromotive force (EMF).

4. High Power-to-Weight Ratio with Compact System Design
The DG4V-3S series is designed to provide efficient control of greater hydraulic powers without increasing solenoid power consumption. When used with Vickers SystemStak™ valves and multi-port subplates, compact and cost-effective system designs are achieved. Multi-fluid capability eliminates the need to change seals.

5. 100% Simulated Working Condition Testing and Drop-in Interchangeability
Every DG4V-3S series valve undergoes 100% bench testing prior to shipment, covering 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 face conforming to ISO 4401-03, enabling direct drop-in replacement without modifying piping or control programs. The DG4V-3S series can be directly interchanged with the original DG4V-3 series, providing superior performance in high tank port pressure scenarios.

Application Areas

• Construction Machinery: Excavators, loaders, bulldozers and other mobile equipment hydraulic directional control

• Aerial Work Platforms: Boom extension, platform leveling hydraulic systems

• Cranes: Mobile cranes, truck-mounted crane outrigger and hoist control

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

• Machine Tools: CNC hydraulic clamping systems, tool changer 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

Expert Maintenance Tips

Installation Guidelines

1. The DG4V-3S series can be mounted in any position. Mounting surface flatness must be ≤ 0.05 mm. Tighten mounting bolts diagonally in stages to the specified torque value.

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. Recommended fluid cleanliness is ISO 4406 20/18/15 or better.

3. Electrical connections must use connectors conforming to ISO 4400 / DIN 43650 to maintain IP65 protection. Control signal cables should be shielded, with the shield grounded at one end.

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 the connector for seal integrity and terminal tightness. Measure coil resistance and replace the coil if deviation exceeds ± 10%. Coil insulation is Class H, coil encapsulation is Class F; 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 Buna-N seals. Under normal operating conditions, replace valve seals every 3,000-5,000 operating hours.

5. Tank Port Back Pressure Management: Tank port back pressure must not exceed 210 bar (3000 psi). The DG4V-3S series is specifically designed for high tank line pressure applications, making it ideal for mobile equipment with high return line back pressure.