Product Short Description
Product Name: 4/3-Way Solenoid Directional Valve (NG6)
Product Introduction: A wet-pin DC solenoid directional valve of NG6 (6 mm) size, conforming to ISO 4401-03 (CETOP 3). The “E” spool means all ports (P, T, A, B) are closed in the center position. With two solenoids for spring-centered return.
Description
Technical Specifications:
Hydraulic Parameters:
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Mounting Pattern: ISO 4401-03-02-0-05 (CETOP 3)
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Max. Pressure P/A/B: 315 bar (350 bar peak)
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Max. Back Pressure T: 210 bar
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Max. Flow: 80 L/min (DC)
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Internal Leakage: <0.3 L/min @ 315 bar
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Fluid: HL, HLP, HVLP hydraulic oils
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Viscosity Range: 10–500 mm²/s
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Oil Temperature: -20 to +70°C
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Weight: 3.9 kg (1 solenoid) / 4.7 kg (2 solenoids)
Electrical Parameters:
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Voltage: DC 24V ±10%
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Coil Power: ~25–38 W, 100% ED (continuous duty)
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Protection: IP65 (with correctly installed connector)
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Response Time: Engage 25–40 ms, Release 20–35 ms
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Switching Frequency: Up to 15,000 1/h
Mechanical & Installation:
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Mounting: Subplate mounting, 4 × M5 bolts, torque 6 Nm
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Ambient Temperature: -20 to +50°C
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Coil Surface Temperature: Max. 120°C
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Insulation Class: VDE 0580 F
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Connectors: DIN 43650 standard plug with rectifier bridge, LED indicator, surge protection
Working Principle:
When the solenoid is energized, the electromagnetic force pushes the spool against the return spring, connecting P→A and B→T (or vice versa depending on which solenoid is energized). When de-energized, springs return the spool to the center position where all ports are blocked.
Functional Features:
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Wet-pin solenoid design allows coil replacement under pressure, provides better heat dissipation and longer life
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Spring-centered for fail-safe return
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Manual emergency override
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LED status indication
Application Scenarios: Machine tools, injection molding machines, metallurgical equipment, press controls, and general industrial hydraulic systems requiring directional control of actuators.
Installation & Usage Notes:
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Each coil must be individually protected by a suitable fuse with characteristic K (inductive load)
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Valve must be mounted on a surface included in the equipotential bonding
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Ensure the pressure chamber is filled with hydraulic oil before energizing the coil
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Contamination level must comply with ISO 4406 class 20/18/15
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Maximum switching frequency must be respected to avoid thermal overload
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