A proportional valve is a type of hydraulic control valve positioned between conventional hydraulic valves and electro-hydraulic servo valves. It is commonly used in open-loop hydraulic systems to enable remote control of hydraulic parameters, and can also serve as a signal conversion and amplification component in closed-loop control systems.
MODEL INSTRUCTION
| Name | Model Examples | bore diameter | Pressure Adjustment Range |
| Electro-hydraulic Proportional Pilot-Operated Relief Valve | EDG-01-V-C-1-PN-T13-50 | 01 | B/C/H |
| Electro-hydraulic Proportional Relief Valve | EBG-03-B-T-50 | 03/06/10 | |
| Electro-hydraulic Proportional Relief and Pressure-Reducing Valve | ERBG-06-C-50 | 06/10 | |
| 40Ω Series Electro-Hydraulic Proportional (Unidirectional) Flow Control Valve | EF(C)G-02-10-N-31 | 02/03/06 | — |
| 40 Ω to 10 Ω Series Electro-Hydraulic Proportional Relief Flow Valve | EFBG-03-125-C-15 | 03/06 | — |
| Power Amplifier for Proportional Valve | AME-D-I1-24-10 | Note: D – DC input; I1 – single-channel plug-in type; 24 – 24 V DC | |
TECHNICAL FEATURE
01. Enables multi-level control of pressure and flow, simplifying the hydraulic system.
02. Offers high stability, easy operation, and convenient maintenance.
03. Highly resistant to contamination and cost-effective.
04. Features high control accuracy, low hysteresis, fast dynamic response, and excellent wear resistance.
SPECIFICATION
| Model | Maximum Working Pressure（MPa） | Use traffic range(L/min) |
| EDG-01 | 24.5 | 0.3～2 |
| EBG-03/06/10 | 24.5 | 3～400 |
| ERBG-06/10 | 24.5 | 250 |
| EF(C)G-02/03/06 | 20.6 | 3～250 |
| EFBG-03/06 | 25 | 2.5～250 |
APPLICATION AREA
Yoyan series proportional valves are primarily used in medium- and high-pressure mechanical industries, such as construction machinery, metallurgy, mining machinery, and sanitation machinery.
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