The 3-way pressure reducing valve type 3DREP 6B is directly actuated by proportional solenoids. They convert an electrical input signal into a proportional pressure output signal. The proportional solenoids are controlable wet pin DC solenoids with central thread and removable coil. The solenoids are controlled optionally via external control electronics.
Proportional Pressure Reducing Valve 3DREP 6B
TECHNICAL REPLACEMENT NOTICE
This Huade® directional control valve serves as a 100% direct drop-in replacement for Bosch Rexroth PROPORTIONAL-PRESSURE-REDUCING-VALVE-3DREP-6B equivalents. Dimensions, mounting interfaces, and technical parameters are identical. Designed for cost reduction in industrial and mobile hydraulic systems.
• Product features:Spring centred control spool
• Specifications:Proportional Pressure Reducing Valve 3DREP 6B series,
• Applications:petroleum, chemical, pharmaceutical
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ISO 4401 Mounting
ISO 4401 / Rexroth interchangeable
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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
- Spring centred control spool
Industrial Applications
- Three-way proportional pressure reducing valve 3DREP 6B is widely used in production equipment in petroleum, chemical, pharmaceutical and other industries.
- ◆Design:
- The valve mainly comprises of:
- Housing (3) with mounting surface
- Control spool (5) and(6) and (4)
- Solenoids(1 and 2 ) with control thread
- ◆Function:
- With the solenoids (1 and 2) de-energised the control spool (5) is held in its centre position by compression springs.
- The control spool (2) is directly actuated when one of the solenoids is energised.
- E.g. by energising solenoid "a" (1)
- →The pressure measuring spool (5) and control spool(4) 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 (1)
- →The control spool (4) is returned to its centre position by the compression springs
- In the middle position the connections A and B to T are open, therefore, the pressure fluid can freely flow to tank. An optional hand overrides makes is possible to move the control spool (4) without energising the solenoid.
- ●Attention!
- Unintended use of the hand override can cause uncontrolled machine movement!
- Symbols of Proportional Pressure Reducing Valve 3DREP 6B
Technical Parameters
Mechanical ratings and operating limits for the Proportional Pressure Reducing Valve 3DREP 6B:
| Parameter / Dimension Name | Value / Rating Specification |
|---|---|
| Hydraulic | Hydraulic |
| Operating pressure (MPa) - Port P | 10,if excess 10,then installate the valve,type ZDR6DP..-30B/...in input port |
| Operating pressure (MPa) - Port T | 3 |
| Max.flow (L/min) | 15(∆p=5MPa) |
| Degree of contamination (um) | Filter recommendation with a minimum retention rate of β10≥ 75 |
| Hysteresis (%) | ≤3 |
| Repeatability accuracy (%) | ≤1 |
| Response sensitivity (%) | ≤1 |
| Reversal span (%) | ≤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 (°C) | -20 to +70 |
| Installation | optional, preferably horizontal |
| Weight (kg) | Type C:2.6;type A.B:1.5 |
