Yuken DSG-02 Series Solenoid Directional Valve | DSG-02-3C2-DL DSG-02-2B2-LW | Hydraulic Control Valve

The DSG-02 Series Solenoid Directional Valves, manufactured by Chengyuan Hydraulic, are premium control components engineered to the original technical standards of Yuken. This range includes the highly versatile models DSG-02-2B2-LW, DSG-02-3C2-DL, and DSG-02-3C4-DL. Renowned for their reliability and compact design, these valves are a staple in CNC machinery and industrial automation. Chengyuan guarantees 100% Drop-in Interchangeability with original Yuken DSG-02 units, adhering to ISO 4401-AB-03-4-A mounting patterns. Every valve is subjected to 100% simulation load testing on our digital benches to ensure precise switching and structural integrity under high-pressure, high-frequency operation.

Technical Specifications 

• Compatible Brand: Yuken (DSG Series Standard)

• Core Model Codes: DSG-02-3C2-DL, DSG-02-2B2-LW, DSG-02-3C4-DL, DSG-02-2B2-DL

• Nominal Size: 6mm (NG6 / Cetop 3)

• Max. Operating Pressure: 31.5 MPa (315 Bar)

• Max. Flow Rate: 60 – 100 L/min (Depending on spool type)

• Max. Back Pressure (T Port): 16 MPa (160 Bar)

• Switching Frequency: Up to 300 cycles/min (DC)

• Electrical Connection: DL (Junction Box), LW (Lead Wire)

• Voltage Options: AC 110V/220V, DC 12V/24V

Key Technical Advantages:

• High-Pressure, Low-Loss Fluid Paths: The internal valve body is cast with CFD-optimized flow channels, significantly reducing pressure drops and minimizing heat generation while maximizing flow efficiency.

• Wet-Type Solenoid Design: The armature is fully immersed in hydraulic oil, providing natural damping to reduce switching noise and impact. This design eliminates dynamic seals on the pushrod, preventing potential external leakage.

• Precision-Ground Spool: Spools are crafted from high-grade alloy steel, vacuum-hardened, and precision-ground to achieve micron-level clearances. This ensures ultra-low internal leakage even during long-duration pressure holding.

• High-Endurance Return Springs: Equipped with fatigue-resistant alloy springs, the valve guarantees precise spool centering and consistent performance over millions of cycles, even in high-vibration environments.

Application Areas:

• CNC Machine Tools: Controlling clamping fixtures, tool changers, and braking circuits.

• Plastic Machinery: Pilot control for injection molding machines or small-scale clamping units.

• Packaging & Light Industry: Executing high-frequency reciprocating motions and logic control for feeding mechanisms.

• Hydraulic Power Units (HPU): Serves as the primary control layer for Cetop 3 manifold blocks.

Expert Maintenance Tips:

• Solenoid Coil Safety: Ensure the coil is correctly fitted onto the armature tube before applying power. Energizing an unloaded coil will cause immediate overheating and burnout.

• Filtration Standard: Maintain oil cleanliness at ISO 4406 19/17/14 or better. Small hard particles can jam the spool or cause scoring on the precision-honed surfaces.

• T-Port Pressure Control: Verify that instantaneous backpressure at the T-port does not exceed 16 MPa. Excessive backpressure will counteract the solenoid force, potentially preventing the valve from switching correctly.