The 4WRA 6 W30-2X proportional directional valves are actuated by means of proportional solenoids with central thread and removable coil. The solenoids are controlled either by external control electronics. The performance of 4WRA 10 EA60-2X is more advanced in technology thanks to introducing the Rexroth technology. This type 4WRA-2X valves are already popular among Chinese consumers.
Proportional Directional Valve 4WRA 6 W30-2X
TECHNICAL REPLACEMENT NOTICE
This Huade® directional control valve serves as a 100% direct drop-in replacement for Bosch Rexroth PROPORTIONAL-DIRECTIONAL-VALVE-4WRA-6-W30-2X equivalents. Dimensions, mounting interfaces, and technical parameters are identical. Designed for cost reduction in industrial and mobile hydraulic systems.
• Product features:interface A1 or F1
• Specifications:4WRA 6 W30-2X series,
• Applications: direction of hydraulic fluid.
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100% Genuine Huade
Direct factory authorized supply
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ISO 4401 Mounting
ISO 4401 / Rexroth interchangeable
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Sealed rust-proof global shipping
Technical Data Sheet
- Product Overview
- Features & Applications
- Technical Parameters
Product Overview
Key Features
- For subplate mounting
- Direct actuated proportional valve for controlling the direction and volume of a flow
- Spring centred control spool
- Integrated control electronics, interface A1 or F1 for type 4WRAE
- Actuation by means of proportional solenoids with central thread and removable coil
- Control electronics for type 4WRA
Industrial Applications
- The 4/2- and 4/3-way proportional directional valves are designed as direct operated components for subplate mounting. The 4WRA 6 W30-2X proportional directional valve is used to control the flow and direction of hydraulic fluid.
- The 4WRA 6 W30-2X proportional valves basically consist of: Housing (1) with mounting surface Control spool (2) with compression springs (3 ),Solenoids (4) with central thread,Optional integrated valve electronics (5).
- HD-4WRA(E)...2X/...
- With the solenoids (4) de-energised, the control spool (2) is held in the central position by compression springs (3).
- Direct actuation of the control spool (2) by energising a proportional solenoid.E.g. controlling of solenoid "b" (4). The control spool (2) is moved to the left in proportion to the electrical input signal.Connection form P to A and B to T via orifice-like cross sections with progressive flow characteristics. De-energisation of the solenoid (4).The control spool(2) is returned to the central position by compression spring (3).
- Structure of Proportional Directional Valve 4WRA -2X
- HD-4WRA(E)...A-2X
- In principle, the function of this valve version corresponds to that of the valve with 3 spool positions. However, the valves with 2 spool positions are only fitted with solenoid "a". Instead of the 2nd proportional solenoid a plug (5) is fitted for NS 6 or for NS 10 a cover(5).
- Note for type 4WRA 6..-2X/...
- Draining of the tank line is to be avoided. With the appropriate installation conditions, a back pressure valve is to be installed (back pressure approx.0.2MPa).
Technical Parameters
Mechanical ratings and operating limits for the Proportional Directional Valve 4WRA 6 W30-2X:
| Parameter / Dimension Name | Value / Rating Specification |
|---|---|
| Hydraulic | Hydraulic |
| Valve type - HD-WRA | HD-WRAE |
| Operating pressure (MPa) - Port A,P,B - 31.5 | 31.5 |
| Operating pressure (MPa) - Ports T - 21 | 21 |
| Nominal flow qv nom at △ P=1MPa - NS6 (L/min) - 7、15 and 26 | 7、15 and 26 |
| Nominal flow qv nom at △ P=1MPa - NS10(L/min) - 30 and 60 | 30 and 60 |
| Degree of contamination (μ m) - ≤20 | ≤20 |
| Hysteresis(%) - ≤5 | ≤5 |
| Reversal error (%) - ≤1 | ≤1 |
| Response sensitivity(%) - ≤0.5 | ≤0.5 |
| Pressure fluid - Mineral oil or Phosphate ester | Mineral oil or Phosphate ester |
| Viscosity range - 20~380 | 20~380 |
| Ambient temperature range (℃) - -20 to +80 | -20 to +50 |
| Weight (kg) - NS6 - 2 | 2.2 |
| Weight (kg) - NS10 - 6.6 | 6.8 |
