Product Overview
The KSO-G02-44CP-10-N-82 is a classic model in the DAIKIN KSO series of solenoid pilot-operated directional control valves, G02 size (1/4 inch), with mounting pattern conforming to ISO 4401-03 / CETOP 3 / NG6 standards. This 4-way, 3-position solenoid directional valve features spring centered configuration with 44CP spool type, 10 design series. The KSO series delivers an exceptional combination of 35 MPa (350 kgf/cm²) high pressure and 100 L/min (G02 size) high flow capacity. Constructed from high-strength cast iron, the valve body delivers superior rigidity and fatigue resistance.
About KSO-G02 44CP Model:
“44CP” is a specific DAIKIN KSO series spool/spring configuration code—4-way, 3-position spring centered with all ports fully closed in neutral (closed center). This is one of the most commonly used standard valve configurations in industrial hydraulic systems, suitable for applications requiring precise actuator positioning and locking in neutral. The 44CP is part of the 44C* sub-series (including 44CA, 44CB, 44CC, 44CD) within the KSO-G02 series.
Model Code Breakdown (KSO-G02-44CP-10-N-82):
KSO: Solenoid Pilot-Operated Directional Control Valve Series
G02: Nominal Size G02 (1/4 inch, NG6 / CETOP 3)
44CP: Spool/Spring Configuration (4-way, 3-position, spring centered, 44CP type)
10: Design Series Number (10 Series)
N: Electrical Connection/Option Code (Terminal Box Type or specific wiring)
82: Factory Internal Configuration/Design Code
As an original DAIKIN KSO series solenoid directional valve, this product offers complete interchangeability within the same series and size, requiring no modifications to mounting interfaces or piping layouts.
Technical Specifications
KSO-G02-44CP-10-N-82 Specifications:
Model: KSO-G02-44CP-10-N-82
Brand: DAIKIN
Series: KSO Series
Spool Configuration: 4-way, 3-position
Spring Arrangement: Spring Centered
Spool Type: 44CP
Design Series: 10 Series
Nominal Size: G02 (1/4 inch)
Mounting Standard: ISO 4401-03 / CETOP 3 / NG6
Mounting Type: Gasket Mount
Maximum Operating Pressure: 35 MPa (350 kgf/cm²)
Note: Certain spool types (5C/66C/51C) have max. operating pressure of 25 MPa (250 kgf/cm²)
Maximum Flow Rate: 100 L/min (G02 size)
Allowable Back Pressure: 17.5 MPa (175 kgf/cm²)
Maximum Shifting Frequency: 240 cycles/min
Protection Class: IEC Pub529 IP65
Insulation Class: Class B (Coil: Class H)
Dielectric Strength: AC1500V for 1 minute
Insulation Resistance: 50 MΩ minimum
Compatible Fluids: Petroleum-based hydraulic oil
Body Material: Cast Iron
Connection Type: Subplate (ISO 4401-03)
Mounting Bolts: M5×45 (4 bolts)
Tightening Torque: 6.5–8.5 N·m
Certifications: CE certified
Key Technical Advantages
1. 44CP Spool Type — Precise Actuator Positioning and Locking
The KSO-G02-44CP-10-N-82 features 44CP spool type — all ports P, A, B, and T are fully closed in neutral. This center position ensures the hydraulic actuator is precisely positioned and locked when de-energized, with no position drift due to oil leakage. Ideal for applications requiring strict position holding in neutral.
2. 35 MPa High Pressure and 100 L/min High Flow Performance
The KSO-G02 series delivers an exceptional combination of 35 MPa (350 kgf/cm²) operating pressure and 100 L/min flow capacity. This performance places it at the forefront of NG6 size solenoid directional valves, suitable for demanding high-pressure, high-flow hydraulic systems.
3. Rugged Environmental Protection
Designed to IEC Pub529 IP65 dust and water-proof standards, the valve features effective protection against dust ingress and water jets from any direction. CE compliance makes it suitable for export to European markets and equipment requiring CE certification.
4. High-Reliability Solenoid System
The solenoid coil utilizes Class H insulation material for excellent heat resistance. Insulation resistance exceeds 50 MΩ with dielectric strength of AC1500V for 1 minute. The solenoid supports continuous duty rating, ensuring long-term stable operation.
5. Precision Machining and Long Service Life
The valve body is manufactured from high-strength cast iron, with spool and bore surfaces precision-ground to ensure minimal internal leakage and long-term shifting accuracy. With a maximum shifting frequency of 240 cycles/min, the valve is ideal for high-cycle applications.
6. Modular Stack Valve Compatibility
The KSO-G02 series supports modular stack valve configurations. Allows flexible integration of throttle valves, check valves, pressure reducing valves, and other hydraulic components—significantly simplifying hydraulic system layout and reducing leakage risk.
Application Areas
KSO-G02-44CP-10-N-82 (4-way, 3-position, spring centered):
Injection Molding Machinery — Directional and positioning control for clamping, injection, and ejection cylinders
CNC Machine Tools — Precision worktable positioning and locking control
Hydraulic Presses and Forging Equipment — Press slide position holding and control
Die-Casting Machines — Directional and positioning control for high-pressure casting equipment
Industrial Automation Production Lines — Hydraulic actuator control requiring precision position holding
Construction Machinery — Directional control for mobile equipment
Expert Maintenance Tips
1. Installation Guidelines
G02 size mounting surface must conform to ISO 4401-03 / CETOP 3 / NG6 standards.
Use 4 M5×45 mounting bolts with recommended tightening torque of 6.5–8.5 N·m.
Thoroughly clean the mounting surface and all ports (P, A, B, T) before installation to prevent foreign particles from entering and causing spool sticking or seal damage.
KSO-G02 series supports modular stack valve configurations—pay attention to sealing and bolt length between stacked valve layers.
2. Hydraulic Fluid Cleanliness
Recommended fluid: Petroleum-based hydraulic oil. For water-glycol based fluids, verify seal material compatibility.
Note: Certain spool types (5C/66C/51C) have maximum operating pressure of 25 MPa (250 kgf/cm²), not 35 MPa. Confirm pressure rating with the complete model code.
Install a return line filter with minimum 25 μm filtration rating upstream of the valve.
3. Electrical Connection Specifications
Voltage for KSO-G02-44CP-10-N-82 varies by configuration (AC100V, AC200V, DC24V, etc.). Verify coil nameplate voltage matches supply voltage before connection.
Connector standard: DIN 43650 / ISO 4400. Ensure the connector is fully locked to achieve IP65 protection.
4. 44CP Spool Type Usage Considerations
44CP spool type features all ports fully closed in neutral — the actuator is locked when de-energized with no position drift.
Suitable for applications requiring precise actuator positioning and holding.
For applications requiring free actuator movement in neutral, select 44CA (A/B ports open to T) or 44CC and other center function variants.
5. Periodic Maintenance Inspection
Inspect the valve body for external oil leakage every 2,000 operating hours or at least annually.
Check electrical connectors/terminal boxes for looseness, oxidation, or moisture ingress.
If response lag or unstable shifting is observed, first check system fluid cleanliness and verify the spool is not sticking.
