SWH-G03-C4-D24-10 Northman Solenoid Directional Valve 310bar

Product Overview

Models such as SWH-G03-C4-D24-10, SWH-G03-C2M-D24-10-LS and SWH-G03-C8-D24-20 belong to the Northman (or compatible) SWH-G03 series of solenoid-operated directional control valves. Featuring wet-pin high-power solenoids, they comply with ISO 4401 (NG10 / CETOP 05 / D05) mounting standards. Every unit undergoes rigorous 100% simulated operating-condition testing and offers excellent drop-in interchangeability with equivalent NG10 solenoid directional valves. Optimized flow passages minimize pressure drop while the reliable spring-centered design ensures stable switching, making these valves ideal for medium-to-high-pressure industrial hydraulic systems.

Technical Specifications 

• Model examples: SWH-G03-C4-D24-10, SWH-G03-C2M-D24-10-LS, SWH-G03-C8-D24-20
• Valve type: Solenoid-operated directional control valve (4-way 3-position or 2-position)
• Nominal size: NG10 (Size 10 / G03 / D05)
• Mounting interface: ISO 4401 (CETOP 05)
• Spool types: C4, C2M, C8 etc. (depending on specific model)
• Maximum operating pressure: 310 bar (some references list 315 bar)
• Maximum flow: 120 L/min
• Maximum tank line back pressure: 160 bar
• Actuation: Wet-pin solenoids
• Supply voltage: 24 VDC (D24)
• Electrical connection: 10 = Joint box with indicating lights; 20 = Hirschmann type with indicating lights
• Additional function: LS = Low surge voltage option (selected models)
• Maximum operating frequency: 240 CPM
• Recommended filtration: 25 μm
• Hydraulic fluid: Mineral oil, viscosity 10–400 cSt
• Temperature range: –25 °C to +90 °C (standard)
• Weight: approx. 4.0–5.5 kg (depending on single/double solenoid configuration)

Key Technical Advantages

1. High pressure and large flow capability: Rated up to 310 bar with 120 L/min flow capacity; optimized flow passages effectively reduce pressure drop and improve system energy efficiency.
2. Wet-pin solenoids and reliable switching: Wet-pin construction offers good heat dissipation and long service life; spring centering ensures fast, reliable shifting even under frequent operation.
3. Excellent drop-in interchangeability: Strict compliance with ISO 4401 NG10 mounting face and standardized electrical interfaces allows direct replacement of equivalent valves, minimizing modification costs and downtime.
4. Flexible electrical and functional options: Joint box or Hirschmann connectors with indicating lights, plus low-surge (LS) versions, accommodate diverse installation and EMC requirements.
5. Precision machining and corrosion protection: High-accuracy valve body with surface anti-corrosion treatment delivers low internal leakage and long-term operational stability.

Application Areas

Injection moulding machines, die-casting machines, metal-forming equipment, machine-tool hydraulics, packaging machinery, mobile equipment, automated production lines and other medium-to-high-pressure hydraulic circuits requiring reliable directional control.

Expert Maintenance Tips

1. Verify mounting surface flatness and roughness before installation; use specified M6 bolts and tighten to the recommended torque; fit seals correctly to prevent external leakage.
2. Maintain recommended fluid cleanliness and filtration; use mineral oil within the specified viscosity range. Thoroughly bleed the system before first start-up to avoid cavitation and noise.
3. Ensure supply voltage remains within 24 VDC ±10%. Periodically inspect joint box or connector sealing and indicating light status.
4. For LS (low-surge) versions, note the surge-suppression function that reduces sparking at relay contacts. Clean and protect the valve during long-term storage.
5. Do not disassemble internal components other than the solenoid coil. Seal replacement or repairs should be performed only by experienced technicians; always perform functional and leakage tests before returning the valve to service.