Bosch Rexroth | 4WRZ16W6-150-7X6EG24N9EK4D3V
4WRZ16W6-150-7X/6EG24N9EK4/D3V
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The 4WRZ16W6-150-7X/6EG24N9EK4/D3V proportional directional valve is manufactured by Bosch Rexroth for the WRZ Proportional Directional Valves series and is applied to regulate flow and direction in hydraulic automation circuits. It delivers a nominal flow of 150 l/min at a 10 bar differential, while the main stage tolerates operating pressures up to 350 bar. The housing follows the ISO 4401-07-06-0-94 porting pattern so it fits standard subplates. Electrical control relies on a 24 V DC supply, and the solenoid draws up to 1.5 A to position the spool proportionally. Coil resistance measures 4.8 Ω at 20 °C, enabling predictable current feedback for drive cards. Continuous energization is possible because the duty cycle is 100 percent, and thermal design allows the coil to reach 150 °C without degrading insulation.
Additional hydraulic and environmental parameters define installation requirements. The main flow path must observe a cleanliness class of 20/18/15 per ISO 4406 to avoid sticking. Only mineral oils classified HL or HLP according to DIN 51524 are permitted as the working fluid, and sealing integrity is maintained by FKM elastomers. A command value overlap of 15 percent creates a controlled neutral band, while hysteresis remains at or below 6 percent for repeatable positioning. The return port can withstand back-pressure up to 250 bar without affecting internal leakage. Protection is rated IP65, guarding the enclosure against dust ingress and water jets common in factory settings. The assembled valve weighs 13.4 kg, providing a manageable mass for manifold mounting and sufficient rigidity to damp pressure pulsations.
Technical Specifications
Cleanliness Class (main Valve)
20/18/15 (ISO 4406)
Coil Resistance (20 °c)
4.8 Ω
Command Value Overlap
15%
Duty Cycle
100%
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Hysteresis
≤ 6%
Max Coil Temperature
150 °C
Max Operating Pressure (main)
350 bar
Max Return Port Pressure (t)
250 bar
Max Solenoid Current
1.5 A
Nominal Flow
150 l/min (Δp=10 bar)
Porting Pattern
ISO 4401-07-06-0-94
Seal Material
FKM
Supply Voltage
24 V DC
Type Of Protection
IP65
Weight
13.4 kg
1620 Old Apex Road
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