VICKERS DG4V-3-0A-M-U-H7-69-EN124

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Product details

I. Model Code Breakdown

Code Segment Specification Definition

DG4V Series: 4-way high-pressure directional valve with wet armature solenoid, subplate mounting, max working pressure 350 bar

3 Mounting standard: ISO4401-03 / NFPA D03 / CETOP03, NG6 standard subplate, 6mm nominal port size

0A Spool function: 2-position 4-way, single solenoid plus spring return • De-energized home position: P connected to T, port A & B blocked • Solenoid energized: P→A, B→T, for single-acting cylinder hydraulic control; 2-position single-solenoid spring biased configuration

M With manual override pin: enables manual spool shifting under power loss or coil failure for commissioning and emergency operation

U Seal material: NBR nitrile rubber, compatible with conventional mineral hydraulic oil; operating oil temperature: -20℃ ~ +80℃

H7 Electrical configuration: DIN43650 Type A connector, 24VDC coil, built-in surge suppression & power indicator lamp, IP65 protection rating

69 Revised body revision code: upgraded replacement for older 60 version with damped spool for cushioned switching and low hydraulic shock

EN124 EU standard certification: valve body and connector comply with EU industrial EN standards, marking for export-grade products

II. Core Hydraulic Performance Parameters

1. Rated working pressure: 350 bar (5000 PSI); instantaneous peak pressure: 420 bar; permissible backpressure at T port ≤50 bar, maximum T port withstand pressure: 207 bar

2. Rated flow: standard 40 L/min; up to 80 L/min for 69 upgraded version (test condition: oil temp 40℃, pressure drop ΔP=7 bar)

3. Compatible fluid: ISO VG32 / VG46 mineral hydraulic oil; recommended fluid cleanliness: NAS Class 8~9 (19/17/14)

4. Switching response: pull-in time ≤45 ms, spring reset time ≤28 ms; wet armature delivers smooth shifting and low water hammer

5. Body material: ductile iron housing with precision honed spool for minimal internal leakage

III. Electrical Specifications (H7 = 24VDC)

- Coil: 24VDC wet-type solenoid, rated power 30W, 100% continuous duty cycle (ED100%)

- Termination: DIN43650 3-pin industrial connector, IP65 dust & water proof, fitted with LED power indicator and freewheeling diode for surge absorption

- Allowable voltage tolerance: DC 21.6V ~ 26.4V

IV. 0A Spool Circuit Function

- De-energized (spring home position): P communicates with T, A & B isolated; pump unloads and cylinder is hydraulically locked

- Energized (solenoid actuated): P feeds A, B drains to T; cylinder extends for single-direction movement and automatically resets via spring upon power cut-off

Typical Usage: Control circuits for single-acting clamping cylinders, lift cylinders

V. Construction & Product Features

1. Wet Armature Design: coil immersed in hydraulic oil, superior shock & contamination resistance with far longer service life than dry-type solenoids

2. 69 Upgraded Damped Spool: built-in micro metering notches for cushioned start-stop, effectively reducing system hydraulic shock and operating noise (DG4V-3S smooth-switch series derivative)

3. Subplate Mounting: standard D03 subplate interface; modular manifold installation available; optional standalone base: DGMA-3 series mounting plates

4. M Manual Override: built-in side push pin for no-power test running and emergency pressure relief & directional shift

VI. Application Fields

Injection molding machines, machine tool hydraulics, compact hydraulic power units, auxiliary valves for construction machinery, metallurgical clamping tooling, hydraulic clamping circuits for automated production lines

VII. Optional Modifications & Replacement Notes

- High-temperature service: replace U code with H (FKM fluorocarbon seal), operating range -20℃ ~ 120℃

- 12VDC mobile vehicle application: change H7 to G7 (12VDC); AC220V power: select H6 (AC220V coil)

- Remove manual override: omit M suffix → Model: DG4V-3-0A-U-H7-69-EN124

I. Product Overview

TheVICKERS DG4V-3-0A-M-U-H7-69-EN124is a high-performancesolenoid-operated directional control valvewith a3-position, 4-way (3P4W)configuration. It is widely used in industrial automation, machinery manufacturing, construction equipment, and other fields. Its core function is to control the flow direction of hydraulic fluid by actuating the valve spool via solenoids, enabling complex hydraulic system operations.

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II. Technical Specifications & Performance

1. Pressure & Flow Ratings

• Maximum Operating Pressure: 350 bar (5,075 psi), suitable for high-pressure applications.

• Maximum Flow Rate: 80 L/min (21 US gpm), supporting large-flow hydraulic systems.

• Tank Port Pressure: 210 bar (3,000 psi), ensuring stable return flow.

2. Solenoid & Electrical Characteristics

• Coil Rated Voltage: 24 VDC, compatible with DC power supplies.

• Response Time: Shift time typically< 20 milliseconds, enabling rapid actuation.

• Electrical Connection: Conforms toISO 4400 (DIN 43650)standards, compatible with various control systems.

• Coil Types: Available inD1 (diode-protected), D2 (construction machinery), D7 (Transzorb-type)options for different operating conditions.

3. Construction & Materials

• Valve Body Material: High-grade alloy steel, balancing pressure resistance and corrosion resistance.

• Spool Design: Wear-resistant spool with precision-machined surfaces to minimize friction and wear.

• Seal Material:Viton (FKM)seals for excellent high-temperature and oil resistance, suitable for harsh environments.

• Mounting Style: Subplate/manifold mounting, compliant withISO 4401-03, facilitating easy integration into hydraulic systems.

4. Functional Features

• 3-Position, 4-Way Design: Spring-centered neutral position ensures automatic spool return upon de-energization, enhancing safety.

• Low Leakage Design: Precision machining and high-quality seals minimize internal leakage, extending system life.

• High Contamination Resistance: Fluid cleanliness requirement of19/17/14 μm, adaptable to hydraulic oils with minor particulates.

• Long Fatigue Life: Tested for>20 million cycles, demonstrating high reliability and durability.

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III. Applications

1. Industrial Automation: Controls hydraulic actuators in robotic arms, conveyor systems, etc., for precise positioning and rapid directional changes.

2. Construction Machinery: Installed in excavators, loaders, etc., to manage hydraulic cylinder extension/retraction and rotation.

3. Machinery Manufacturing: Suitable for presses, die-casting machines, and other applications requiring high-pressure, large-flow hydraulic control.

4. Energy & Metallurgy: Used in high-pressure hydraulic systems for valve/gate control in power plants and smelters.

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IV. Advantages

1. Efficient Control: Maintains low energy consumption under high-pressure conditions, improving overall system efficiency.

2. Flexible Installation: Supports multiple solenoid plug and position combinations, adaptable to various system layouts.

3. High Reliability: Robust design ensures stable performance in demanding industrial environments.

4. Cost-Effective: Long service life reduces maintenance frequency and operational costs.