DSG-01-2B3B-A220-51T | Yuken Solenoid Valve 350bar 100L/min NG6

Product Overview

The DSG-01-2B3B-A220-51T and DSG-01-3C2-D24-N1-51T are YUKEN DSG series wet-type solenoid operated directional valves, NG6 (CETOP 3 / NFPA D03) size, subplate mounting, with mounting surface conforming to ISO 4401-03. The DSG series is YUKEN’s most iconic solenoid valve product line, renowned globally for its high pressure, high flow, and low pressure drop performance. The valve body is constructed from high-strength cast iron, delivering superior rigidity and fatigue resistance.

DSG-01-2B3B-A220-51T:

The DSG-01-2B3B-A220-51T is a 2-position, 3-way solenoid directional valve featuring a single solenoid with detent configuration. The detent mechanism locks the spool in the shifted position even after the solenoid is de-energized—ideal for applications requiring long-term maintenance of a specific working position (such as clamp holding or actuator locking), combining energy efficiency with safety and reliability.

DSG-01-3C2-D24-N1-51T:

The DSG-01-3C2-D24-N1-51T is a 4-way, 3-position solenoid directional valve featuring a double solenoid spring-centered configuration. In neutral position, all ports are blocked (closed center), and the spool automatically returns to neutral when de-energized. This is the most widely used standard valve configuration in industrial hydraulic systems, suitable for a wide range of actuator directional control applications.

Both products feature YUKEN’s wet-type solenoid design—the movable iron core operates submerged in hydraulic oil, providing both lubrication and cushioning for quiet, long-life, and highly reliable shifting performance.

As original YUKEN solenoid directional valves, these products offer complete interchangeability within the same series and size, requiring no modifications to mounting interfaces or piping layouts.

Model Code Breakdown:

DSG-01-2B3B-A220-51T:

• DSG – Solenoid Operated Directional Valve

• 01 – Nominal Size NG6 (1/4 inch)

• 2B3B – 2-position, 3-way (2B) with detent (3B)

• A220 – Coil Voltage AC220V (50/60Hz)

• 51T – Design/Configuration Series (51 Series)

DSG-01-3C2-D24-N1-51T:

• DSG – Solenoid Operated Directional Valve

• 01 – Nominal Size NG6 (1/4 inch)

• 3C2 – 4-way, 3-position (3C) with spring centered (2)

• D24 – Coil Voltage DC24V

• N1 – Electrical Connection/Option Code

• 51T – Design/Configuration Series (51 Series)

Technical Specifications 

DSG-01-2B3B-A220-51T Specifications:

• Model: DSG-01-2B3B-A220-51T

• Brand: YUKEN

• Series: DSG-01 Series

• Product Type: Solenoid Operated Directional Valve

• Spool Configuration: 2-position, 3-way

• Spring Arrangement: With Detent

• Nominal Size: NG6 (1/4 inch)

• Mounting Standard: ISO 4401-03 / CETOP 3 / NFPA D03

• Maximum Operating Pressure: 350 bar (5080 PSI)

• Maximum Flow Rate: 100 L/min (26.4 GPM)

• Coil Voltage: AC220V (50/60Hz)

• Body Material: High-strength cast iron

• Mounting Type: Subplate Mounting

• Weight: Approx. 1.85 kg

DSG-01-3C2-D24-N1-51T Specifications:

• Model: DSG-01-3C2-D24-N1-51T

• Brand: YUKEN

• Series: DSG-01 Series

• Product Type: Solenoid Operated Directional Valve

• Spool Configuration: 4-way, 3-position

• Spring Arrangement: Double Solenoid, Spring Centered

• Neutral Position: Closed Center — all ports blocked

• Nominal Size: NG6 (1/4 inch)

• Mounting Standard: ISO 4401-03 / CETOP 3 / NFPA D03

• Maximum Operating Pressure: 350 bar (5080 PSI)

• Maximum Flow Rate: 100 L/min (26.4 GPM)

• Coil Voltage: DC24V

• Body Material: High-strength cast iron

• Mounting Type: Subplate Mounting

• Weight: Approx. 2.8 kg(Reference only)

DSG-01 Series Common Specifications:

• Changeover Frequency: Up to 300 cycles/min

• Protection Class: IP65 (with properly installed connector)

• Hydraulic Fluid: Mineral oil

• Fluid Temperature Range: -20°C to +60°C

• Mounting Bolts: M5×45 (4 bolts)

• Bolt Height: 38 mm

• Country of Origin: Japan

Key Technical Advantages

1. High-Pressure High-Flow Low-Pressure-Drop Performance

The DSG-01 series delivers an exceptional combination of 350 bar operating pressure and 100 L/min flow capacity with extremely low pressure drop, achieved through a powerful wet-type solenoid and optimized five-chamber flow channel design. This performance places it at the forefront of NG6 size solenoid directional valves globally.

2. Wet-Armature Solenoid for Quiet, Long-Life Operation

Features YUKEN’s proven wet-type 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 levels, longer service life, and higher reliability.

3. Unique Advantages of Detent Configuration (DSG-01-2B3B-A220-51T)

The DSG-01-2B3B-A220-51T features a detent mechanism—after the solenoid shifts the spool, the detent locks it in the working position even when power is removed. This design is particularly suitable for applications requiring long-term maintenance of a specific working position (such as clamp holding, actuator locking, or safety interlocks), combining energy efficiency with safety and reliability.

4. Spring-Centered Safety Return (DSG-01-3C2-D24-N1-51T)

The DSG-01-3C2-D24-N1-51T features a double solenoid spring-centered configuration—when de-energized, the spool automatically returns to neutral under spring force, with all ports blocked. This design complies with hydraulic system safety standards, automatically isolating actuator circuits during power failure or emergency shutdown to prevent unintended motion.

5. Superior Electrical Protection and Reliability

Solenoid coil insulation meets Class H rating per JIS C4003. Coil housings are constructed from heat-resistant rigid plastic, unaffected by temperature rise. The electrical section features moisture-proof construction with IP65 protection class, effectively resisting dust and water ingress. Simple disassembly and easy maintenance.

6. International Standard Compliance for Global Interchangeability

DSG-01 series mounting conforms to ISO 4401-03 / CETOP 3 / NFPA D03 international standards. Fully compatible with globally adopted NG6 size interfaces, enabling direct replacement of same-series, same-specification products without modifications to mounting interfaces or piping layouts.

Application Areas

DSG-01-2B3B-A220-51T (2-position, 3-way with detent):

• Fixture and Jig Hydraulic Systems — Workpiece clamping and release holding control

• Injection Molding Clamping Systems — Clamp state holding without continuous power

• Safety Interlock Devices — Hydraulic interlock control requiring maintained safety state

• Actuator Position Locking — Position holding for hydraulic cylinders or motors

DSG-01-3C2-D24-N1-51T (4-way, 3-position, spring centered):

• Injection Molding Machinery — Directional control for clamping, injection, and ejection cylinders

• CNC Machine Tools — Directional control for machine tool hydraulic systems

• Hydraulic Presses and Forging Equipment — Directional control for presses and forming equipment

• Die-Casting Machines — Directional control for high-pressure casting equipment

• Construction Machinery — Hydraulic directional control for excavators, loaders, and mobile equipment

• Industrial Automation Production Lines — Hydraulic actuator control for automated production lines

• Steel and Mining Equipment — Directional control for rolling mills and heavy-duty hydraulic systems

Expert Maintenance Tips

1. Installation Guidelines

• Mounting surface must conform to ISO 4401-03 / CETOP 3 / NFPA D03 standards.

• Use 4 M5×45 mounting bolts with recommended tightening torque of 5–7 N·m.

• Thoroughly clean the mounting surface and all ports (P, A, B, T) before installation to prevent foreign particles from entering the valve and causing spool sticking or seal damage.

• Bolt height is 38 mm—ensure sufficient installation space.

2. Hydraulic Fluid Cleanliness

• Recommended fluids: Mineral oil meeting YUKEN specifications.

• Maintain fluid temperature within -20°C to +60°C.

• Install a return line filter with minimum 10 μm filtration rating to ensure fluid entering the valve meets cleanliness requirements.

3. Electrical Connection Specifications

• DSG-01-2B3B-A220-51T uses AC220V supply; DSG-01-3C2-D24-N1-51T uses DC24V supply. Verify supply voltage matches coil rated voltage before connection.

• IP65 protection is achieved with properly installed connector. Ensure the connector is fully locked to prevent contact issues caused by vibration.

• DSG-01-3C2-D24-N1-51T is a double solenoid configuration—pay attention to wiring polarity and interlock logic for both solenoids.

4. Detent Usage Notes (DSG-01-2B3B-A220-51T)

• The detent mechanism locks the spool in the shifted position after solenoid actuation. To reset, the opposing solenoid must be energized or the detent must be manually released.

• Exercise caution during manual override operation—be aware of the detent lock state to ensure safe operation.

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-type 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.