Huade’s explosion-proof proportional directional valve 4WRA 6-2X are 4/2- and 4/3-way proportional directional valves. They are designed as direct operated components for subplate mounting. They are actuated by means of proportional solenoids with central thread and removable coil. The solenoids are controlled either b external control electronics. This 4WRA 6-2X explosion-proof valve has a wide range of applications, mainly in areas where precise control of hydraulic system flow, pressure, speed and other parameters is required.
Explosion-Proof Proportional Directional Valve 4WRA 6-2X
TECHNICAL REPLACEMENT NOTICE
This Huade® directional control valve serves as a 100% direct drop-in replacement for Bosch Rexroth EXPLOSION-PROOF-PROPORTIONAL-DIRECTIONAL-VALVE-4WRA-6-2X equivalents. Dimensions, mounting interfaces, and technical parameters are identical. Designed for cost reduction in industrial and mobile hydraulic systems.
• Product features:control the direction and magnitude of a flow
• Specifications:4WRA 6-2X series,
• Applications:machine tools, industrial automation.
Function and configuration of Explosion-Proof Proportional Directional Valve 4WRA 6-2X
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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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Secure Packaging
Sealed rust-proof global shipping
Technical Data Sheet
- Product Overview
- Features & Applications
- Technical Parameters
Product Overview
Key Features
- Direct operated proportional directional valve to control the direction and magnitude of a flow
- For subplate mounting: Porting pattern conforms to ISO4401
- Actuation by means of proportional solenoids with central thread and removable coil
- Spring centred control spool
Industrial Applications
- Explosion-Proof proportional directional valve 4WRA 6-2X can be used in heavy machinery manufacturing, machine tools, industrial automation.
- The valves basically consist of: Body (1) with mounting surface, Control spool (3) with compression springs (2), Solenoids (4) with central thread.
- With the solenoids (4), de-energised, the control spool (3) is held in the central position by the compression springs (2 ).
- Direct operation of the control spool (3) by energising one of the proportional solenoids(4) e.g. control of solenoid right, then movement of the control spool (3) to the left in proportion to the electrical input signal, and connection from P to A and B to T via orifce-like crosssections with progressive flow characteristics.
- WRA(E)...A-2X the 2 switched position valves are however only fitted with solenoid "a". A plug (6) is fitted in place on the "b" proportional solenoid.
- Symbols of Explosion-Proof Proportional Directional Valve 4WRA 6-2X
Technical Parameters
Mechanical ratings and operating limits for the Explosion-Proof Proportional Directional Valve 4WRA 6-2X:
| Parameter / Dimension Name | Value / Rating Specification |
|---|---|
| Hydraulic | Hydraulic |
| Installation - Optional, preferably horizontal | Optional, preferably horizontal |
| Nominal size - 6 | 10 |
| Weight (kg) - 4WRA... 2X - 2 | 6.6 |
| Nominal flow Qvnom at △p = 10 bar (L/min) - 7, 15, 26 | 30, 60 |
| Hysteresis (%) - ≤5 | ≤5 |
| Reversal span (%) - ≤1 | ≤1 |
| Response sensitivity (%) - ≤ 0.5 | ≤ 0.5 |
| Max.operating pressure - Ports A,B,P (bar) - 350 | 350 |
| Max.operating pressure - Port T (bar) - 210 | 210 |
| Pressure fluid - Mineral oil(HL,HLP) to DIN 51524 | Mineral oil(HL,HLP) to DIN 51524 |
| Pressure fluid - Other pressure fluids on request! | Other pressure fluids on request! |
| Ambient air temperature range (℃) - 4WRA...2X - -20°C to 70°C(-4°F to 158°F) | -20°C to 70°C(-4°F to 158°F) |
| Viscosity range (mm2/s) - 20to 380(preferably 30 to 46) | 20to 380(preferably 30 to 46) |
| Fluid Cleanliness Class - NAS1638 class9 or ISO 4406 class 20/18/15 | NAS1638 class9 or ISO 4406 class 20/18/15 |
