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Proportional Directional Valve Rexroth Interchangeable

Proportional Directional Valve 4WRE

MANUFACTURER Genuine Huade Hydraulic
STANDARDS ISO 4401 / DIN 24340
AVAILABILITY Factory Direct Stock
Proportional Directional Valve 4WRE
TECHNICAL REPLACEMENT NOTICE

This Huade® directional control valve serves as a 100% direct drop-in replacement for Bosch Rexroth PROPORTIONAL-DIRECTIONAL-VALVE-4WRE equivalents. Dimensions, mounting interfaces, and technical parameters are identical. Designed for cost reduction in industrial and mobile hydraulic systems.

• Product features:Electrical position feedback
• Specifications: 4WRE series,
• Applications: machine,light industry,

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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

Type 4WRE proportional valve adopts sub-plate mounting,spring center. Good flow capacity, high pressure and excellent repetition precision, convenient for use. It can replace the 4WRE series  1X offered by Rexroth thanks to two long-term cooperation with Rexroth. The performance of the  4WRE proportional valve can match that of first-tier international brands. It is a good, affordable alternative.

Mineral oil(for NBR seal),Phosphate ester (for FPM seal)

Associated amplifier (24V rectifier of bridge type)

Key Features

  • Valve for controlling both direction and flow of a hydraulic fluid
  • For subplate mounting
  • Electrical position feedback
  • Spring centred control spool
  • Low pressure drop across the control lands
  • Both valve and electronic control from one supplier
  • Mounting pattern to DIN 24 340 form A, ISO4401 and CETOP - RP121H

Industrial Applications

  • The 4WRE directional valve is suitable for close circuit, and widely used in machine,light industry,metallurgy, mine,space flight and other field.
  • Type 4WRE directional valves are direct operated by means of proportional solenoids and are used to control the direction and volume of a flow.
  • They consist basically of housing(1), control spool (4), two return springs (5), two proportional solenoids (2) and a positional transducer (3).
  • Type 4WRE6...10B... and 4WRE10... 10B...(3-position)
  • If the solenoid ‘a’ (2) is energized, the spool is moved to the right, the travel being proportional to the electrical input signal. The control spool (4) causes the V-shaped grooves to open progressively to flow. The position of the control spool (4) is monitored by the positional transducer (3). In the electronic control the actual position of the control spool is compared with the pre-set value. Here we have a position control circuit which recognizes existing differences
  • between the pre-set value (command value) and the feedback value (actual value) and corrected by appropriate signals on the relevant solenoids. Once solenoid ‘a’ (2) is de-energised the control spool is returned to its centre position by the return springs (5).
  • Structure of Proportional Directional Valve 4WRE6... and 4WRE10...
  • Type4WRE..A...10B/...(2-positionvalve)
  • Principle of this type of valve is the same as 4wRE...10B/ .. However,this type valve has only one sensor and one solenoid.
  • Structure of Proportional Directional Valve 4WRE6...A... 10B and 4WRE10...A... 10B
  • Symbol of Proportional Directional Valve 4WRE

Technical Parameters

Mechanical ratings and operating limits for the Proportional Directional Valve 4WRE:

Parameter / Dimension Name Value / Rating Specification
Hydraulic data Hydraulic data
Size - 6 10
Operating pressure(Mpa) - port A, B, P - 31.5 31.5
Operating pressure(Mpa) - port T - 16 16
Flow (L/min) - 65 260
Degree of contamination(㎛) - ≤ 20 (recommend ≤10) ≤ 20 (recommend ≤10)
Hysteresis (%) - <1 <1
Repeatability (%) - <1 <1
Response sensitivity (%) - ≤ 0.5 of nominal signal ≤ 0.5 of nominal signal
Frequency response(-3dB) (Hz) - 6 4
Hydraulic fluid - Mineral oil(for NBR seal),Phosphate ester (for FPM seal) Mineral oil(for NBR seal),Phosphate ester (for FPM seal)
Viscosity range(mm ²/s) - 2.8 to 380 2.8 to 380
Pressure fluid temperature range(℃) - -20 to+70 -20 to+70
Mounting position - Optional Optional
Weight(kg) - Valve with 1 solenoid - 1.91 5.65
Weight(kg) - Valve with 2 solenoid - 2.66 7.65

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