I. Product Overview
The YUKEN proportional valve EFBG-03-125-H-21T233-L is a high-performance electro-hydraulic proportional relief flow control valve manufactured by YUKEN Kogyo Co., Ltd. in Japan. This valve regulates system pressure and flow rate precisely through electrical signals, making it suitable for hydraulic systems requiring precise control of pressure and flow.
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II. Key Specifications
1. Model: EFBG-03-125-H-21T233-L
2. Port Size: 10 mm (corresponding to the "03" in the model number)
3. Maximum Operating Pressure: 25 MPa (250 kgf/cm²)
4. Maximum Flow Rate: 125 L/min
5. Flow Adjustment Range: 1–125 L/min
6. Pressure Adjustment Range: 1.4–21 MPa (H series, wider than C series)
7. Rated Current: 770 mA (H series)
8. Coil Resistance: 10 Ω
9. Hysteresis: Less than 3%
10. Repeatability Accuracy: 1%
11. Weight: 16 kg (may vary slightly by manufacturing batch)
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III. Features and Advantages
1. Energy Efficiency: Automatically adjusts pressure differential based on load pressure, maintaining minimal and stable pump pressure to save power consumption.
2. High Stability: Utilizes advanced electro-hydraulic proportional control technology for stable and precise flow and pressure regulation.
3. Temperature Compensation: Eliminates the impact of oil temperature variations on controlled flow rate.
4. Modular Design: Facilitates system integration and maintenance, supporting modular stack valve configurations.
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IV. Applications
The YUKEN proportional valve EFBG-03-125-H-21T233-L is suitable for hydraulic systems requiring precise flow and pressure control, including:
1. Industrial Automation Production Lines
2. Construction Machinery
3. Shipbuilding
4. Injection Molding Machinery
5. Die-Casting Machinery
6. Leather Machinery
7. Shoe-Making Machinery
8. Woodworking Machinery
9. Vulcanization Machinery
10. Hydraulic Forming Machines
11. Stretching Machines
12. Ceramic Tile Pressing Machines
13. Other automatic hydraulic machine tool industries
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V. Usage Precautions
1. Installation Environment: Ensure the installation environment meets product requirements, avoiding damp, corrosive gas, or high-temperature conditions.
2. Pre-Installation Inspection: Check the valve and accessories for completeness and damage before installation.
3. Installation Steps: Follow the installation instructions in the product manual, paying attention to flow direction and mounting position.
4. Read Manual Before Use: Carefully review the product manual to understand performance characteristics and operating methods.
5. Regular Inspection and Maintenance: Periodically check the valve's operational status and address abnormalities promptly. Clean and inspect the valve regularly to prevent blockages or damage. Check sealing performance and replace seals if leaks occur.
6. Storage Conditions: When not in use for extended periods, store the valve in a dry, ventilated area to prevent moisture or corrosion.
