Parker D41VW D81VW D111VW Series Valve | D41VW004C1NJW91 | Solenoid Pilot Operated
| Model Number | D41VW004C1NJEE, D41VW003C1NJW3R, D41VW004C1NJW91 |
|---|
Product Description
The Parker D*1VW Series from LIC Hydraulic is a premier line of solenoid pilot-operated directional control valves designed for heavy-duty industrial applications. By using a specialized pilot valve to actuate the main spool, this series handles massive flow volumes with precision and ease. Models range from NG10 (D31) to NG32 (D111). We guarantee 100% mechanical interchangeability and perform 100% pilot-switching sensitivity and main spool integrity tests to ensure flawless operation at pressures up to $350\text{ bar}$.
Technical Configuration Details
Model Range: D31VW (NG10), D41VW (NG16), D81VW (NG25), D111VW (NG32).
Standard Compliance: CETOP and ISO mounting patterns.
Voltage: $24\text{V DC}$, $110\text{V AC}$, $230\text{V AC}$ options available.
Max Pressure: $350\text{ bar}$ ($5000\text{ psi}$) for P, A, and B ports.
Flow Capacity: From $150\text{ L/min}$ (D31) up to $1100\text{ L/min}$ (D111).
Key Technical Advantages
Optimized Main Spool Geometry: The internal flow paths are engineered to minimize turbulence and pressure drop, maximizing the power available to your actuators while reducing thermal buildup in the reservoir.
Versatile Pilot/Drain Configurations: Supports internal/external pilot supply and internal/external drain options. This adaptability is crucial for systems where main line pressure fluctuates or where low back-pressure on the pilot stage is required.
Soft-Shift Capability: The D*1VW series allows for the installation of pilot orifices to dampen the spool movement, effectively neutralizing hydraulic shocks and extending the lifespan of pipes and cylinders.
Industrial-Grade Reliability: Utilizing wet-armature pilot solenoids ensures smooth shifting and superior heat dissipation, making these valves suitable for continuous $24/7$ high-cycle production environments.
Application Areas
Heavy Presses: Forging, stamping, and material recycling equipment.
Injection Molding: High-flow control for mold movement and injection cylinders.
Metal Processing: Steel mill auxiliary systems and hydraulic shear controls.
Infrastructure: Large-scale dam gate controls and industrial power units.
Expert Maintenance Tips
Pilot Pressure Monitoring: Ensure that the external pilot pressure (if used) stays within the required range ($\ge 15\text{ bar}$). Insufficient pilot pressure is the #1 cause of incomplete or slow spool shifting.
Cleanliness Integrity: To prevent clogging of the delicate pilot passages, maintain system filtration to ISO 4406 18/16/13. A clogged pilot orifice can cause the main valve to “stick” in one position.
Seal Replacement: When servicing the valve, always inspect the interface seals between the pilot valve and the main body. Using high-quality Viton seals is recommended for systems operating in high-temperature or fire-resistant fluid conditions.
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