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Proportional and Servo Valves
Hydraulic Directional Control




Improving Performance and Accuracy

Standard directional proportional valves are perfect for many hydraulics applications. There are low cost designs without spool feedback for manual and open loop control applications. These can be direct or pilot operated. General purpose valves have better axis performance and accuracy, and Rexroth has implemented valve design improvements that have reduced cost. Consequently, these standard proportional directional valves work well in many closed loop applications.





Model 4WRA(E)B Proportional Directional Control Valve
Data Sheet (PDF)
RA 29 057

Model 4WRA(E)B Proportional Directional Control Valve
Hydraulics Application: 4/2 and 4/3-Way Proportional Directional Control Valve, Direct-Operated

Key features:
  • Size 6
  • Electrically operated, mechanical feedback
  • Listen to PodCast for In-depth Technical Benefits
Download 4WRA(E)B Proportional Directional Control Valve Data Sheet


Model 4WRA and 4WRAE Proportional Directional Control Valves
Data Sheet (PDF)
RE 29 055

Model 4WRA and 4WRAE Proportional Directional Control Valves
Hydraulics Application: 4/2- and 4/3-way proportional directional valves, direct operated, without electrical position feedback

Key features:
  • Sizes 6 and 10
  • Porting pattern to ISO 4401
  • Control of the direction and magnitude of a flow
  • Proportional solenoid operation
  • Spring-centered control spool
  • Different spool overlaps possible
  • Integrated control electronics (OBE) for type 4WRAE
  • Listen to PodCast for In-depth Technical Benefits
Download 4WRA and 4WRAE Proportional Directional Control Valve Data Sheet


Model 4WRBA..EA, 4WRBA..E.W. and 4WRBAE..E./W. Proportional Directional Control Valves
Data Sheet (PDF)
RE 29 047
RE 29 049
RE 29 051

Model 4WRBA..EA, 4WRBA..E.W. and 4WRBAE..E./W. Proportional Directional Control Valves
Hydraulics Application: Proportional directional valves, without position control

Key features:
  • Sizes 6 and 10
  • Series 2x
  • Maximum operating pressure P, A, B 315 bar, T 250 bar
  • Options include 4/2 and 4/3-way
Download 4WRBA..EA, 4WRBA..E.W. and 4WRBAE..E./W. Proportional Directional Control Valves Data Sheets
4/2 proportional directional control valve, without position control
4/3 proportional directional control valve, without position control
4/3 proportional directional control valve, without position control, with on-board electronics (OBE)


Model 4WRE and 4WREE Proportional Directional Control Valves
Data Sheet (PDF)
RE 29 061

Model 4WRE and 4WREE Proportional Directional Control Valves
Hydraulics Application: 4/2 and 4/3-way proportional directional valves, direct operated, with electrical position feedback

Key features:
  • Sizes 6 and 10
  • Series 2x
  • Maximum operating pressure 315 bar (4600 psi)
  • Maximum flow 80 L/min (21 GPM) Size 6
  • Maximum flow 180 L/min (47 GPM) Size 10
  • Listen to PodCast for In-depth Technical Benefits
Download Model 4WRE and 4WREE Proportional Directional Control Valves Data Sheets


Models 4WRP..EA.. and 4WRP..E../..W.. Proportional Directional Control Valves
Data Sheet (PDF)
RE 29 020
RA 29 022

Models 4WRP..EA and 4WRP..E./W. Proportional Directional Control Valves
Hydraulics Application: Servo solenoid valves with positive overlap and position feedback (Lvdt AC/AC)

Key features:
  • Size 6 and 10
  • Series 1X
  • Maximum operating pressure P, A, B 315 bar (4600 psi)
Download 4WRP..EA and 4WRP..E./W. Proportional Directional Control Valves Data Sheets

4/2 servo solenoid valves (4WRP ..EA..)
4/2 servo solenoid valves (4WRP ..E.. / ..W..)


Models 4WRPE..EA and 4WRPE..E./W. Proportional Directional Control Valves
Data Sheet (PDF)
RA 29 024
RE 29 025

Models 4WRPE..EA and 4WRPE..E./W. Proportional Directional Control Valves
Hydraulics Application: Servo solenoid valves with on-board electronics, positive overlap and position feedback

Key features:
  • Size 6 and 10
  • Series 1X
  • Maximum operating pressure P, A, B 315 bar (4600 psi)
Download 4WRPE..EA and 4WRPE..E./W. Proportional Directional Control Valves Data Sheets

4/2, with on-board electronics (4WRPE ..EA..)
4/3, with on-board electronics (4WRPE ..E.. / ..W..)


Model 5WRP and 5WRPE Proportional Control Valves
Data Sheet (PDF)
RA 29 043
RE 29 045

Model 5WRP and 5WRPE Proportional Control Valves
Hydraulics Application: High-response directional valves, direct operated, with electrical position feedback

Key features:
  • Size 10
  • Porting pattern to DIN 24340 form A and ISO 4401
  • Control of flow P – A / A – T
  • Application for closed-loop velocity and pressure controls
  • Actuation through control solenoid
  • Position sensing of the control spool via an inductive position transducer
  • Integrated control electronics (OBE) for type 5WRPE
  • Linear characteristic curve
Download 5WRP and 5WRPE High Response Directional Control Valves Data Sheets

Servo solenoid valves with electrical position feedback (Lvdt DC/DC ±10 V) (WRP)
Servo solenoid valves with on-board electronics (OBE) (WRPE)



Model 4WRH, 4WRZ, 4WRZE Proportional Directional Control Valves
Data Sheet (PDF)
RE 29 115

Model 4WRH, 4WRZ, 4WRZE Proportional Directional Control Valves
Hydraulics Application: 4/2, 4/3 and 5/2, 5/3 proportional directional valves, pilot operated, without electrical position feedback

Key features:
  • Sizes 10 to 52
  • Porting pattern to ISO 4401
  • Control of the direction and magnitude of a flow
  • Pilot control via 3-way pressure reducing valve
  • Spring centering and anti-rotation feature of the main spool
  • Different spool overlaps possible
  • Integrated control electronics (OBE) for type 4WRZE
  • Listen to PodCast for In-depth Technical Benefits
Download 4WRH, 4WRZ, 4WRZE Proportional Directional Control Valves Data Sheets


Model 4WRKE Proportional Directional Control Valve
Data Sheet (PDF)
RA 29 075

Model 4WRKE Proportional Directional Control Valve
Hydraulics Application: Proportional directional valves, pilot operated, with integrated control electronics (OBE) and electrical position feedback

Key features:
  • Sizes 10 to 35
  • Porting pattern to ISO 4401
  • Control of the direction and magnitude of a flow
  • Pilot control via 3-way proportional directional valve without position feedback
  • Spring-centering of the main spool
Download Proportional Directional Control Valve Data Sheet




For more information or to order brochures and catalogs, contact your nearest distributor.

Literature
Intelligent Hydraulics in New Dimensions – RA 09879 (PDF)
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