HOERBIGER PRL500 Proportional Valve | PRL500PC10P40 HV08039 | HAWE PRL500PC10P60

LIC Hydraulic’s HOERBIGER PRL500 Series proportional pressure reducing valves are the premium choice for stepless pressure control in advanced hydraulic systems. These valves, including models PRL500PC10P40 (HV08039) and PRL500PC10P60 (HV07856), are now fully supported within the HAWE technological ecosystem. Designed to convert an electrical input signal into a precise hydraulic output pressure, the PRL500 series is critical for load-sensing and pressure-compensation circuits. We guarantee 100% Drop-in Interchangeability with original specifications. Every valve undergoes 100% dynamic response and linearity testing to ensure laboratory-grade control for industrial presses and mobile machinery.

Technical Specifications

• Series ID: PRL500 (Proportional Pilot Control)

• Order Codes:

  • HV08039: Corresponds to PRL500PC10P40 (40 bar max regulated pressure).

  • HV07856: Corresponds to PRL500PC10P60 (60 bar max regulated pressure).

• Max Inlet Pressure: Up to 315 bar (4570 PSI).

• Regulation Range: 0-40 bar or 0-60 bar based on suffix code.

• Control Current: Standard 24V DC proportional solenoid signal.

• Hysteresis: < 3% of maximum pressure.

Key Technical Advantages

• Superior Linearity: The PRL500 features a hardened spool-and-sleeve set, ensuring an ultra-linear relationship between input current and output pressure, which is essential for high-precision repeatability.

• Three-Way Functionality: This valve acts as both a pressure reducer and a relief valve. If the downstream pressure exceeds the setting, the valve opens to the tank port, protecting the circuit from pressure spikes.

• Rapid Dynamic Response: The low-inertia solenoid design allows for millisecond response times, making it ideal for pilot-controlling high-speed industrial presses and injection molding machines.

• Robust Industrial Build: Engineered with a fully metallic enclosure and wear-resistant seals to withstand vibration, heat, and demanding duty cycles in heavy-duty environments.

Expert Maintenance Tips

• Amplifier Calibration: For optimal performance, ensure the electronic amplifier (PWM frequency) is matched to the PRL500’s coil specifications. Incorrect dither settings can increase hysteresis.

• Oil Filtration: Proportional valves are highly sensitive to fine particulates. Maintain system cleanliness at ISO 4406 18/16/13 to prevent spool sticking or silt build-up in the orifices.

• Drain Line Integrity: Ensure the “T” (Tank) line is unrestricted. Backpressure on the tank port will directly affect the accuracy of the regulated pressure on the “A” port.

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