Duplomatic DS3 Solenoid Valve | DS3-S4/11N-A230K1 | DS5 DL3 Directional Valve

The Duplomatic DS3 Series from LIC Hydraulic is a direct-operated solenoid directional valve compliant with ISO 4401-03 (CETOP 03) standards. Models such as the DS3-S4/11N-A230K1 feature a robust three-chamber housing design that optimizes flow paths for high efficiency. Equipped with high-performance wet-armature solenoids, these valves offer quiet operation and exceptional longevity even in high-cycle applications. We guarantee 100% mechanical interchangeability and perform 100% shifting response and internal leakage testing on every unit, ensuring industrial-grade reliability at pressures up to $350\text{ bar}$.

Technical Specifications 

• Series: Duplomatic DS3 (also available in DS5/CETOP 05)

• Full Code Example: DS3-S4/11N-A230K1

• Mounting Interface: ISO 4401-03 (CETOP 03 / NG6)

• Max Operating Pressure:

  • Ports P-A-B: $350\text{ bar}$ ($5000\text{ psi}$)

  • Port T (Drain): $210\text{ bar}$ (DC) / $160\text{ bar}$ (AC)

• Max Flow Rate: $100\text{ L/min}$ ($26.4\text{ GPM}$)

• Solenoid Voltage: $230\text{V AC}$ (A230), $24\text{V DC}$ (D24), and more

• Connector Type: K1 (DIN 43650)

• Spool Type: S4 (All ports blocked in center)

Key Technical Advantages

• Wet Armature Technology: The solenoids are designed with the armature immersed in oil. This lubrication prevents wear, reduces mechanical noise during shifting, and acts as a heat sink, allowing for shifting frequencies up to 15,000 cycles per hour.

• Minimized Pressure Drop: The valve body is engineered with cast flow passages that reduce internal resistance. This results in lower energy consumption and reduced fluid heating across the hydraulic system.

• High Shifting Reliability: Precise spool-to-bore clearances and heavy-duty return springs ensure that the valve shifts reliably into its neutral position, providing consistent control for mission-critical automation.

• Versatile Modular System: The standard CETOP 03 footprint allows the DS3 to be used in conjunction with a wide range of modular valves (pressure, flow, and check valves), enabling the creation of compact, custom-functional manifolds.

Application Areas

• CNC Machine Tools: Controlling tool turrets, clamping cylinders, and pallet changers.

• Plastic Injection Molding: Directional logic for clamping and auxiliary motion.

• Baling Presses: Managing the reciprocating cycles of hydraulic rams.

• Automation Lines: Fast-acting control for conveyor gates and robotic grippers.

Expert Maintenance Tips

• Coil Orientation: The DS3 coils are fully rotatable. During installation, orient the DIN connector for easy cable access and ensure the retaining nut is securely tightened to protect against vibration-induced failure.

• Back-Pressure Management: Monitor back-pressure at Port T. Excessive back-pressure can oppose the solenoid’s force, leading to sluggish response. Ensure the drain line is adequately sized for the system flow.

• Fluid Cleanliness: To prevent spool sticking, maintain oil cleanliness at ISO 4406 19/17/14 or better. We highly recommend using a $10\text{ }\mu\text{m}$ absolute filter to protect the precision-ground internal surfaces of the valve.