The 3-way pressure reducing valve type 3DREP6-2X…is directly actuated by proportional solenoids. They convert an electrical input signal into a proportional pressure output signal. The proportional solenoids are controllable wet pin DC solenoids with central thread and removable coil. The solenoids are controlled optionally via external control electronics(type 3DREP-2X)or by integrated control electronics(type 3DREPE-2X).
Proportional Pressure Reducing Valve 3DREP6-2X
TECHNICAL REPLACEMENT NOTICE
This Huade® directional control valve serves as a 100% direct drop-in replacement for Bosch Rexroth PROPORTIONAL-PRESSURE-REDUCING-VALVE-3DREP6-2X equivalents. Dimensions, mounting interfaces, and technical parameters are identical. Designed for cost reduction in industrial and mobile hydraulic systems.
• Product features: Eurocard format
• Specifications:Proportional Pressure Reducing Valve 3DREP6-2X series,
• Applications:automatic control of hydraulic systems
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ISO 4401 Mounting
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Technical Data Sheet
- Product Overview
- Features & Applications
- Technical Parameters
Product Overview
Key Features
- Directly controlled proportional valves for the control of the pressure and direction of a flow
- Actuated via proportional solenoids with central thread and removable coil
- Hand override, optional
- Spring centered control spool
- Type HD-3DREPE with integrated electronics, interface A1
- External control electronics for type HD-3DREP:
- Analogue amplifier type HD-VT-VSPA2-50-1X/...in Eurocard format
- Digital amplifier type HD-VT-VSPD-1-1X/. ..in Eurocard format
- Electrical amplifier type HD-VT-11118 of modular design
- Valve and proportional control electronics from a single source
Industrial Applications
- Proportional pressure reducing valve 3DREP6-2X is widely used in automatic control of hydraulic systems in various industries such as machine tools, light industry, metallurgy, and so on.
- The valve mainly comprises of:solenoids(5 and 6),housing(1),control spool(2)with pressure measuring spools (3 and 4) and optional integrated valve electronics(7).
- With the solenoids(5 and 6) de-energised the control spool(2)is held in its centre position by compression springs. The control spool (2)is directly actuated when one of the solenoids is energized.
- E.g. by energizing solenoid (5):the pressure measuring spool(3)and control spool(2)move to the right in proportion to the electrical input signal. The connection from P to B and A to T is via orifice form cross-sections with progressive flow characteristics.
- De-energisation of the solenoid (5):the control spool(2)is returned to its centre position by the compression springs. In the middle position the connections A and B to T are opened, therefore the pressure fluid can freely flow to tank. An optional hand overrides(9 or 10),makes is possible to move the control spool(2)without energising the solenoid.
- The function of this version of the 2 position valve is basically the same as that of the valve with 3 switching position.
- The 2 position valves are however only fitted with either solenoid 5 or 6. A plug (11)is fitted in place of the second solenoid
- Symbols of Proportional Proportional Pressure Reducing Valve 3DREP6-2X
Technical Parameters
Mechanical ratings and operating limits for the Proportional Pressure Reducing Valve 3DREP6-2X:
| Parameter / Dimension Name | Value / Rating Specification |
|---|---|
| Hydraulic | Hydraulic |
| Operating pressure range MPa - Port P - 2 to 10 for pressure stage 1.6 | 2 to 10 for pressure stage 1.6 |
| Operating pressure range MPa - Port P - 3 to 10 for pressure stage 2.5 | 3 to 10 for pressure stage 2.5 |
| Operating pressure range MPa - Port P - 5 to 10 for pressure stage 4.5 | 5 to 10 for pressure stage 4.5 |
| Operating pressure range MPa - Port T - 0 to 3 | 0 to 3 |
| Max.flow L/min - 15(△p=5MPa) | 15(△p=5MPa) |
| Filter fineness (μm) - ≤20(preferably≤10) | ≤20(preferably≤10) |
| Hysteresis (%) - ≤5 | ≤5 |
| Repeatability accuracy (%) - ≤1 | ≤1 |
| Response sensitivity (%) - ≤0.5 | ≤0.5 |
| Pressure fluid - Mineral oil, or phosphate ester | Mineral oil, or phosphate ester |
| Viscosity range mm2/s - 20~ 380 | 20~ 380 |
| Pressure fluid temperature range ( ℃) - -20~+80 | -20~+80 |
| Weight (Kg) - 2 | 2.2 |
| Electrical | Electrical |
| Electrical data, solenoid | Electrical data, solenoid |
| Valve type - HD-3DREP | HD-3DREPE |
| Voltage type - DC | DC |
| Nominal voltage (V) - 24 | 24 |
| Max.current (A) - - 1.5 | 2.5 |
| Solenoid coil resistance (Ω) - Cold value at 20℃ - 4.8 | 2 |
| Solenoid coil resistance (Ω) - Max.warm value - 7.2 | 3 |
| Duty (%) - 100 | 100 |
| Coil temperature ℃ - up to 150 | up to 150 |
| Protection - IP65 | IP65 |
| Electrical, control electronics | Electrical, control electronics |
| Amplifier - HD-VT-VSPA2-50-1X/T1(With 1ramp time) | integrated control electronics |
| Amplifier - HD-VT-VSPA2-50-1X/T5(With 5 ramp times) | integrated control electronics |
| Supply voltage - Nominal voltage VDC - 24 | 24 |
| Supply voltage - Lower limiting value V - 19 | 19 |
| Supply voltage - Upper limiting value V - 35 | 35 |
| current consumption - Imax A - 1.8 | 1.8 |
| current consumption - Impulse current A - 4 | 4 |
