Duplomatic DS5-S1 DS5-S2 DS3-TA Solenoid Directional Valve | CETOP 03 & 05 | High Performance

The DS3 and DS5 Series solenoid directional valves by Chengyuan Hydraulic are high-performance control components engineered for demanding industrial hydraulic systems. Fully compliant with CETOP 03 (DS3) and CETOP 05 (DS5) mounting standards, these valves provide 100% original-place interchangeability with Duplomatic products. Featuring a wet-armature solenoid design, our valves offer smooth actuation, low noise, and exceptional longevity. At Chengyuan, every unit undergoes 100% simulated condition testing to ensure flawless operation at pressures up to 35 MPa, making them the premier choice for machine tools, injection molding, and heavy-duty industrial machinery.

Technical Specifications 

• Series: DS3 (CETOP 03 / NG6) / DS5 (CETOP 05 / NG10)

• Featured Models: DS5-S1/12N-D24K1, DS5-S2/12N-A230K1, DS3-TA/11N-D24K1

• Max Working Pressure (P/A/B): 35 MPa (350 bar) for DS3 / 32 MPa (320 bar) for DS5

• Max Tank Port (T) Pressure: 21 MPa (210 bar)

• Max Flow Rate (DS3): 100 L/min

• Max Flow Rate (DS5): 150 L/min

• Control Voltage: 24V DC (D24K1), 230V AC (A230K1)

• Electrical Connection: DIN 43650 Connector (K1)

• Ingress Protection: IP65 Rated

Key Technical Advantages

• Wet-Armature Technology: The solenoid armature is completely immersed in oil, providing superior lubrication and damping. This design reduces mechanical impact noise and eliminates the risk of external leakage, significantly extending the service life to over 10 million cycles.

• High Pressure & Flow Performance: The internal body channels are flow-optimized to handle up to 150 L/min (DS5) with minimal pressure drop (ΔP), enhancing the overall energy efficiency of the hydraulic circuit.

• Micron-Level Spool Precision: Spools are crafted from high-tensile alloy steel with precision heat treatment and grinding. The micron-level fit ensures minimal internal leakage and prevents hydraulic locking under high-pressure differential conditions.

• 100% Simulated Reliability: Every valve is tested under full pressure and flow conditions. We simulate real-world voltage fluctuations to guarantee reliable shifting performance in even the most unstable power environments.

Application Areas

• Metal Cutting Tools: Precise control for tool carriers and workpiece clamping circuits.

• Injection Molding Machinery: Core circuit switching and pressure holding.

• Metallurgical Equipment: Auxiliary control systems for continuous casting and rolling mills.

Expert Maintenance Tips

• Manual Override Usage: Solenoids are equipped with a manual override button. Use only blunt-tip tools for troubleshooting to avoid scratching the override seal or pin.

• Voltage Stability: While D24K1 coils are robust, ensure the system voltage remains within ±10% to prevent coil overheating or insufficient switching force.

• Fluid Cleanliness: To ensure long-term spool precision, maintain fluid cleanliness at ISO 4406 19/17/14 or NAS 1638 Class 8 or higher.