EFBG-03 Yuken Proportional Flow Control Valve

Product Overview

The EFBG, EDG, ERG, EFBG-03, EBG, EFBG-10-500-H and EFHG-06-500-10 belong to the Yuken E-series proportional electro-hydraulic flow control and relief valves. These valves combine proportional flow control with pressure control, enabling precise regulation of flow and pressure via electrical signals for energy-efficient and accurate system control. Fully interchangeable with original Yuken units, every valve undergoes 100% simulated operating-condition testing for reliable proportional performance in hydraulic systems.

Technical Specifications 

• Model: EFBG-03 / EFBG-10-500-H / EFHG-06 etc. (Yuken EFBG series)
• Type: Proportional electro-hydraulic flow control and relief valve
• Maximum operating pressure: 24.5 MPa
• Maximum flow: EFBG-03 125–250 L/min; EFBG-06 250–500 L/min; EFBG-10 500–1000 L/min
• Metered flow adjustment range: 1–125 / 2.5–250 / 5–500 L/min (size-dependent)
• Minimum pilot pressure: 1.5 MPa
• Hysteresis: ≤ 3%
• Repeatability: ≤ 1%
• Rated current: approx. 750–900 mA (model-dependent)
• Coil resistance: 10 Ω
• Mounting: Sub-plate
• Hydraulic fluid: Petroleum-based

Key Technical Advantages

1. Combined flow and pressure proportional control: Enables precise flow regulation and pressure limiting simultaneously for energy-efficient operation.
2. Low hysteresis and high repeatability: Hysteresis ≤ 3% and repeatability ≤ 1% ensure stable and reliable control.
3. High interchangeability: Identical interfaces and performance to original Yuken EFBG series enable direct drop-in replacement.
4. 100% functional verification under simulated conditions: Every unit is fully tested across electrical signal-to-flow/pressure characteristics before shipment.

Application Areas

• Proportional flow and pressure control on injection molding and die-casting machines
• Speed and force control on machine tools and precision equipment
• Precise actuator regulation on construction machinery
• Proportional energy-saving circuits in industrial hydraulic power units
• Automated systems requiring electro-hydraulic proportional flow control

Expert Maintenance Tips

Ensure the sub-plate mounting surface is clean and flat; tighten to the specified torque. Maintain required fluid cleanliness. Match solenoid current and signal correctly. Periodically check null and proportional characteristics. If hysteresis increases or regulation becomes unstable, first inspect fluid contamination and filters. For long-term storage keep the valve filled with oil. Always use original-specification seals when servicing.