Nachi ESR Series Valve | ESR-G06-250R3 | ESR-G10-500R3 | ES-G02-10 | Proportional Flow Control

ES & ESR Series Electro-Hydraulic Proportional Flow Control Valves

Product Overview: The Nachi-style ES and ESR series are premium electro-hydraulic proportional valves engineered for precise speed regulation in industrial hydraulic systems. The ESR series specifically features integrated pressure compensation, ensuring that the output flow rate remains constant regardless of load pressure fluctuations, thereby providing exceptional motion stability for actuators. Spanning from the compact G02 (Size 6) to the high-capacity G10 (Size 32), these valves provide stepless flow adjustment via proportional solenoids. Their superior linearity and low hysteresis make them indispensable in injection molding machines, CNC tools, and heavy-duty automation.

Featured models: ESR-G06-250R3-8213B, ESR-G10-500R3-10, and ES-G02-10-12.

Key Technical Advantages:

• Load Sensing & Pressure Compensation (ESR only): The internal compensator maintains a precise flow rate even when load pressures vary between 0.5 to 21 MPa.

• Extensive Flow Range: Offers flow capacities from 10 L/min up to a massive 500 L/min, covering the requirements of most medium-to-heavy industrial applications.

• High Response Precision: Optimized throttle edge design keeps hysteresis under 3% and repeatability at 1%.

• Rugged Construction: Cast with high-strength alloys, the valve body maintains long-term sealing integrity and sensitivity under high-pressure conditions up to 21 MPa (210 bar).

• Seamless Integration: Fully compatible with standard DC 24V proportional amplifiers and analog signal inputs for digital closed-loop control.

Detailed Specifications & Parameters:

• Featured Model Matrix:

  • ES-G02-10-12: Size 02 (NG6), Max flow 10 L/min, compact direct-operated proportional control.

  • ESR-G06-250R3: Size 06 (NG22), Max flow 250 L/min, featuring pressure compensation.

  • ESR-G10-500R3: Size 10 (NG32), high-capacity 500 L/min, designed for heavy presses and massive power units.

• Core Technical Specs:

  • Max Operating Pressure: 21 MPa (210 bar).

  • Command Signal: DC current (typically 0-800mA, depending on the amplifier settings).

  • Protection Rating: IP65-rated for industrial dust and water resistance.

  • Mounting Interface: Sub-plate mounting, compliant with ISO 4401 standards.