EFBG Proportional Relief and Flow Valve

EFBG Proportional Relief and Flow Valve

2 week ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

EFBG Proportional Relief and Flow Valve

Product Overview

EFBG Proportional Relief and Flow Valve is a pilot operated compound Hydraulic valve, integrating proportional pressure relief and proportional flow control functions in one unit. It serves as a high-precision energy-saving control component for the hydraulic system of heavy-duty industrial Machine. This Hydraulic valve accepts two independent electrical input signals to continuously and separately regulate system pressure and output flow. It supplies only the required minimal pressure and flow for actuators, greatly reducing overflow power loss of the hydraulic system. Built-in temperature compensation ensures stable flow output even when oil temperature changes.

Available sizes include EFBG-03, EFBG-06, EFBG-10, with C and H pressure range options. It adopts subplate mounting and needs to work with a proportional amplifier. Original and aftermarket replacement versions are available, widely used for injection molding machines, die-casting machines and other high-precision Machine.

Technical Specifications

- Model: EFBG Proportional Relief and Flow Valve

- Type: Pilot operated compound proportional Hydraulic valve

- Mounting: Subplate mounting

- Max working pressure: 24.5 MPa

- Flow range: 1~125 L/min (03 size), 2.5~250 L/min (06 size), up to 500 L/min (10 size)

- Pressure range: C type:1.2~14 MPa; H type:1.5~24.5 MPa

- Input signal: 0~10V or 4~20mA dual independent signal

- Feature: Built-in temperature compensation, low hysteresis, energy-saving load sensing design

- Working Medium: Anti-wear hydraulic mineral oil

- Application: Pressure & flow compound control for hydraulic system of industrial Machine

Working Principle

When the Machine is running, two separate electrical signals are sent to the two proportional solenoids of this Hydraulic valve. One signal controls the relief pressure of the hydraulic system, while the other adjusts the throttle opening to regulate flow rate. The valve automatically tracks load pressure and maintains a small pressure difference, so the pump only outputs the pressure and flow needed by the actuator. When load changes, the valve adjusts pressure and flow continuously in real time. The temperature compensation structure offsets viscosity changes caused by oil temperature fluctuation, keeping the actuator speed stable for the Machine.

Core Advantages

1. EFBG Hydraulic valve realizes independent stepless regulation of pressure and flow, high control accuracy for the whole hydraulic system.

2. Energy-saving design, reduces overflow loss and heat generation, lowers power consumption of the Machine.

3. Built-in temperature compensation, flow stability will not be affected by hydraulic oil temperature variation.

4. Low hysteresis and high repeatability, smooth pressure and flow transition without hydraulic impact.

5. Standard subplate installation interface, good interchangeability, convenient for overhaul and spare part stocking.

Application Range

This Hydraulic valve is widely installed in the hydraulic system of injection molding machines, die casting machines, hydraulic presses, blow molding machines and other heavy-duty industrial Machine. It is used for compound pressure and flow closed-loop control, suitable for new machine assembly and maintenance replacement.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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4 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch , hydraulic system

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