Bosch Rexroth 4-Way Proportional Directional Valves

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Womack Machine Supply Company proudly partners with Bosch Rexroth-Industrial Hydraulics to deliver the finest Industrial Directional Valves available. Our collaboration ensures that customers in multiple locations across the United States have access to these exceptional products, click here to see available locations. Our commitment to excellence, combined with the reliability and performance of Bosch Rexroth-Industrial Hydraulics, guarantees that you receive top-quality Industrial Directional Valves components for your specific needs.

Hysteresis ≤6%
Repeatability ≤3%
Mounts on standard D05, D07, D08, D10 subplates
Spool types: E, EA, W, WA

General Description
Proportional directional control valve Model 4 WRZ is a pilot operated, twostaged, spool valve. It controls the direction and quantity of flow to an actuator, for smooth acceleration to a desired velocity. The valve is normally operated by the appropriate amplifier card. For more information, refer to Bosch Rexroth Data Sheet RA 29 113.

Pilot Operated, Model 4 WRK with Feedback
Model 4 WRKE Feedback with Integrated Electronic

Size 10 to 35 4600 PSI 740.0 GPM

Hysteresis ≤1%
Repeatability ≤0.5%
Mounts on standard D05, D07, D08, D10 subplates
Integral electronics (4 WRKE)
High Response Time
Spool types: E, Q, W

General Description
Control valves Model 4 WRK and 4 WRKE are pilot operated 2-stage proportional directional valves. They control the direction and quantity of flow to an actuator, for smooth acceleration to a desired velocity. The main stage is under closed loop control so that even at high flow, the spool position is maintained independently of the high flow forces that occur. The valve is normally operated by the appropriate amplifier card, or by the integrated electronics. For more information, refer to Bosch Rexroth Data Sheet RA 29 074.

Pilot Operated, Model 4 WRTE with Feedback and Integrated Electronics

Size 10 to 32 5100 PSI 422.0 GPM

Hysteresis ≤1%
Response sensitivity ≤0.5%
Mounts on standard D05, D07, D08, D10 subplates
Integral electronics (4 WRKE)
Suitable for controlling position, velocity, pressure and force
Spool types: E, V, Q, W

General Description
Model 4 WRTE is a pilot operated 2-stage proportional directional valve. It controls the direction and quantity of flow to an actuator, for smooth acceleration to a desired velocity. The main stage is under closed loop control so that even at high flow, the spool position is maintained independently of the high flow forces that occur. The valve is normally operated by the integrated electronics. For more information, refer to Bosch Rexroth Data Sheet RA 29 081.

Servo Pilot Operated, Model 4 WRD
Model 4 WRDE with Integrated Electronics

Size 10 to 35 5100 PSI 740.0 GPM

Hysteresis ≤1%
Repeatability ≤0.5%
Electrical feedback on main spool
Mounts on standard D05, D07, D08, D10 subplates
Integral electronics (4 WRDE)
Excellent metering capabilities due to V notched spool
Models for pressure, flow, speed and position control
Spool types: E, V, Q, W

General Description
Servo pilot operated proportional directional control valves, Models 4 WRD and 4 WRDE are electronically operated 3-stage proportional directional valves. They control the start, stop, direction and quantity of flow to an actuator, for smooth acceleration to a desired velocity. The main stage is under closed loop control so that even at high flow, the spool position is maintained independently of the high flow forces that occur. The valve is normally operated by the integrated electronics, or the appropriate amplifier card. For more information, refer to Bosch Rexroth Data Sheet RA 29 091.

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