Yuken EDG-01V Proportional Relief Valve | EDG-01V-C-P19T17 | Hydraulic Pressure Control

The Yuken EDG-01V Series proportional pilot relief valves, precision-engineered by Chengyuan Hydraulic, represent the pinnacle of electronic-hydraulic pressure control technology. Designed as an elite replacement for the original Yuken series, these valves convert an electrical current signal into a proportional hydraulic pressure output. This enables stepless, remote, and high-speed regulation of system pressure in complex industrial circuits. Our range includes high-demand models such as EDG-01V-C-P19T17-50, EDG-01V-A-1-PNT22-60, and EDG-01V-C-1-PNT13-60.

Chengyuan guarantees 100% drop-in interchangeability with Yuken’s original specifications in terms of mounting interfaces (ISO 4401-AB-03-4-A), electrical coil impedance, and flow-pressure linearity. Every valve undergoes rigorous 100% dynamic load testing to ensure zero-defect performance, minimum hysteresis, and high repeatability under continuous-duty industrial cycles.

Technical Specifications 

• Brand Compatibility: Yuken (Original Standard)

• Core Model Codes: EDG-01V Series (EDG-01V-B, EDG-01V-C, EDG-01V-H)

• Max. Operating Pressure: 25 MPa (250 bar / 3625 psi)

• Max. Pilot Flow Rate: 2.0 L/min (0.53 USgpm)

• Pressure Adjustment Range:

  • Code B: 0.3 – 7.0 MPa

  • Code C: 0.3 – 16.0 MPa

  • Code H: 0.3 – 25.0 MPa

• Rated Current:

  • 800 mA (for B/C types)

  • 900 mA (for H type)

• Coil Resistance: 10 Ω (at 20°C ambient)

• Hysteresis: ≤ 3% (at max. pressure)

• Repeatability: ≤ 1%

• Control Type: DC Proportional Solenoid Drive

Key Technical Advantages:

• Superior Linearity: Equipped with a high-performance proportional solenoid that delivers a stable current-to-force curve, ensuring precise and predictable pressure adjustments.

• Ultra-Low Hysteresis: Advanced internal honing and magnetic circuit optimization keep hysteresis below 3%, allowing the system to react instantly to minute control signal changes.

• Exceptional Low-Pressure Performance: Specifically designed poppet and seat geometries ensure stable regulation even at the minimum setting (0.3 MPa), preventing pressure fluctuations during low-load operations.

• Wet-Pin Solenoid Design: The oil-immersed solenoid provides excellent heat dissipation and lubrication for the armature, ensuring a long operational life and stable impedance under high-temperature conditions.

Application Areas:

• Injection Molding Machines: Precision control of clamping force and multi-stage injection pressure curves.

• CNC Machine Tools: Maintaining constant pressure in hydraulic chucks, turrets, and workpiece clamping systems.

• Hydraulic Presses: Enabling remote electronic stepless control of cylinder pressing forces.

• Pilot Systems: Serving as the remote control stage for large-scale cartridge valves or pilot-operated directional valves.

Expert Maintenance Tips:

• Fluid Cleanliness: Proportional valves are highly sensitive to contamination. Maintain oil cleanliness at NAS Class 9 or ISO 17/14 levels and use filters with a rating of 10 microns or finer.

• Air Bleeding: Ensure the air bleeding screw on the valve is used to purge any air from the solenoid before full operation. Trapped air causes pressure instability and excessive noise.

• Amplifier Matching: Always use a proportional valve amplifier with a “Dither” function (such as Yuken AME-D-10 or Chengyuan compatible drivers) to reduce static friction and optimize response accuracy.