Duplomatic DS3 DS5 DSPE7 Solenoid Directional Valve | DSPE7-C150 DS3-S1 DS5-TA | Hydraulic Control Valve

Chengyuan Hydraulic presents its Duplomatic-compatible series of directional control valves, engineered for high-frequency switching and precise flow regulation. This lineup includes standard DS3 (CETOP 03), DS5 (CETOP 05) solenoid valves, and the high-performance DSPE7 pilot-operated proportional valves with integrated electronics. We guarantee 100% original-place interchangeability. Each valve body is cast from high-strength iron with CFD-optimized galleries to minimize pressure drops. Subjected to 100% simulated condition testing, our valves ensure rapid response times and superior contamination resistance under continuous high pressure, providing a premium alternative to original Duplomatic components.

Technical Specifications:

• Representative Models: DSPE7-C150/20N-II/D24K1, DS5-TA/12N-D24K1, DS3-S1/11N-D24K1

• Mounting Interface: CETOP 03 (DS3), CETOP 05 (DS5), CETOP 07 (DSPE7)

• Max Operating Pressure (P/A/B): Up to 350 bar (5075 psi)

• Maximum Flow Rates:

  • DS3: Up to 100 L/min

  • DS5: Up to 150 L/min

  • DSPE7: Up to 300 L/min (depending on spool type)

• Control Voltage: D24K1 (24V DC, DIN 43650)

• Proportional Control (DSPE7): Integrated electronic amplifier (II), supporting +/- 10V or 4-20mA signals

• Fluid Temperature Range: -20°C to +80°C

Key Technical Advantages:

• Precision Lapped Spool-Body Pairing: Spools are custom-lapped to their respective bodies with micron-level clearances. This minimizes internal leakage and ensures tight neutral sealing, vital for executive actuator positioning.

• CFD Optimized Internal Flow: The internal casting design is refined using Computational Fluid Dynamics. Compared to standard valves, pressure loss is reduced by 15%, significantly lowering system heat generation and improving energy efficiency.

• Heavy-Duty Solenoid Coils (G24/D24): High-performance coils are designed to withstand thermal and current surges. They support 100% ED (Continuous Duty), ideal for 24/7 industrial automation environments.

• Proportional Linearity: For the DSPE7 series, integrated electronics ensure a highly linear relationship between the input signal and flow output with minimal hysteresis, allowing for smooth acceleration and deceleration of heavy loads.

Application Areas:

• Industrial Automation: Injection molding machines, metal forming presses, and machine tool circuits.

• Heavy Machinery: Steering systems for road rollers and distribution control for large hydraulic stations.

• Metallurgical Equipment: Continuous casting machines and hydraulic shearers.

Expert Maintenance Tips:

• Filtration Standard: Proportional valves (DSPE7) are highly sensitive to particles. Maintain system cleanliness at NAS 7 (ISO 4406 18/16/13) or better. Use 10μm or finer filtration.

• Electrical Integrity: Ensure solenoid connectors are correctly seated and tightened. This prevents moisture or coolant ingress from causing coil failure or signal drift.

• Mounting Surface Flatness: The mounting manifold surface must have a flatness error of less than 0.01mm/100mm to prevent body distortion that could lead to spool sticking.