Product Description
The ERG Series from LIC Hydraulic is a premium line of Low-Noise Proportional Relief Valves. Designed to provide seamless, infinite pressure regulation based on input electrical current, models like ERG-01-1113 are essential for modern energy-saving hydraulic systems. This series features a specialized noise-reduction architecture that minimizes fluid turbulence during high-pressure overflow. We offer 100% drop-in replacements for Yuken-style ERG valves, ensuring precision linearity and high dynamic response for your high-end industrial machinery.
Technical Highlights
Series: ERG (Proportional Relief Type)
Sizes: 01 (NG6/Subplate) and 03 (NG10/Subplate)
Max Operating Pressure: Up to $250\text{ bar}$ (3625 psi)
Noise Level: Significantly lower than standard relief valves due to optimized spool damping.
Linearity: $<\pm 3\%$ (with matching power amplifier)
Core Advantages
Ultra-Quiet Performance: Engineered with a unique sound-dampening flow path, the ERG series is the industry choice for indoor HPU applications where noise control is a priority.
Accurate Pressure Tracking: High-sensitivity solenoids ensure that the system pressure precisely follows the control signal, allowing for complex pressure ramping and multi-stage cycles.
Minimal Hysteresis: Precision-lapped internal components ensure consistent performance in both increasing and decreasing pressure phases, critical for repeatability in molding processes.
Modular Integration: Standard ISO mounting patterns allow for easy integration into existing manifolds and power units without re-piping.
Application Areas
Injection Molding: Precise control of injection and clamping pressures.
Hydraulic Presses: Smooth pressure transitions and overload protection for metal forming.
CNC Equipment: Pressure regulation for hydraulic chucks and automatic tool changers.
Automated Production: Real-time pressure adjustment in sophisticated industrial power packs.
Expert Maintenance Tips
Amplifier Calibration: Ensure the “Zero” and “Gain” on the proportional amplifier are calibrated specifically for the ERG valve to achieve the full pressure range.
Strict Filtration: Because proportional pilot orifices are extremely small, fluid must be maintained at ISO 18/16/13 cleanliness. Use a 10-micron absolute filter to prevent spool sticking.
Air Bleeding: During initial commissioning, loosen the air vent screw on the solenoid to release trapped air. Trapped air is the primary cause of pressure hunting and erratic noise.
Company Profile
Professional Manufacturer
