The 2FRE10 two-way proportional flow control valve is a flow control valve for hydraulic systems with a proportional regulation function. Valve 2FRE10 is suitable for scenarios where the speed of actuators (such as hydraulic cylinders or motors) needs to be accurately controlled. Proportional flow valve 2FRE10 continuously adjusts the valve opening by inputting electrical signals (such as 0~10V or 4~20mA) to achieve stepless flow rate change. It is easy to install and is often used in combination with other pressure valves (such as pressure compensators) to improve system stability.
| Hydraulic | ||
| Operating pressure (Mpa) | 31.5 | |
| Minimum pressure differential (Mpa) | size 10 | size 16 |
| 0.3~0.8 | 0.6~1 | |
| Pressure fluid | Mineral oil(for NBR seal), Phosphate ester (for FPM seal) | |
| Viscosity range (mm2/s) | 2.8 to 380 | |
| Pressure fluid temperature range (℃） | -20 to +70 | |
| Hysteresis (%) | ＜±1Qmax | |
| Repeatability (%) | ＜1 Qmax | |
| Sample spread (%) | ＜±2 | |
| Installation | optional | |
| Weight (kg) | 6 | 8.3 |
| Electrical | ||
| Voltage type | DC 24V | |
| Coil resistance of solenoid (Ω) | Cold value at 20℃ 10, Max warm value 13.9 | |
| Max. Power(VA) | 50 | |
| Inductivity (mH) | 6 to 8 | |
| Oscillator frequency (Khz) | 2.5 | |
| VT-5010S30 Demand of insulation IP65 | IP65 | |
▶Valve with a pressure compensator for pressure compensated control of a flow
▶Actuation via a proportional solenoid
▶With electrical position feedback of the control orifice
▶The position transducer coil can be axially moved making the zero point adjustment of the control orifice easy, without having to touch the electronics (electrical-hydraulic)
▶Minimum sample variation of valve and electrical amplifier VT 5004 (separate order)
Application:
The two-way proportional flow control valve 2FRE10 is widely used in industrial hydraulic systems and engineering machinery. Valve 2FRE10 adjusts the speed of hydraulic cylinders or motors in excavators, cranes, forklifts and other equipment to achieve smooth movement and optimized efficiency.
The type 2FRE.. proportional flow control valves have a 2-way function. They can, from an applied electrical command value, regulate a flow which is pressure and to a great extent temperature compensated.
They basically comprise of the housing (1), proportional solenoid with inductive position transducer (2), measuring orifice (3), pressure compensator (4), stroke limiter (5), as well as an optional check valve (6).
The setting of the flow is determined (0 bis 100 %) at the command value potentiometer. The applied command value, causes via the amplifier as well as the proportional solenoid, the adjustment of the measurement orifice (3). The position of the measurement orifice (3) is obtained by the position transducer. Any deviations from the command value are compensated for by the position feedback control.
The pressure compensator (4) holds the pressure drop at the measurement orifice (3) at a constant value. The flow is, therefore pressure compensated.
The small temperature drift is achieved due to the design of the measurement orifice. At a 0 % command value the measurement orifice is closed.
In the case of a loss of power or a cable break at the position transducer the measurement orifice closes. From a 0 % command value a jump free start is possible. Via two ramps within the electrical amplifier it is possible to delay the opening and closing of the measurement orifice.
Via the check valve (6) free flow is possible from B to A.
Strcture of Proportional Flow Control Valve 2FRE10
Symbols of Proportional Flow Control Valve 2FRE10
Address
No. 27, Yangsha Road, Huilong Town, Qidong City, Jiangsu Province, China
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