Bosch Rexroth | 4WRZE16W6-150-7X6EG24ETK31A1M
4WRZE16W6-150-7X/6EG24ETK31/A1M
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The 4WRZE16W6-150-7X/6EG24ETK31/A1M proportional directional valve is part of the WRZ Proportional Directional Valves series produced by Bosch Rexroth for closed-loop hydraulic automation systems. It modulates flow and direction based on an analog ±10 V command, allowing smooth positioning of cylinders and motors. The onboard electronics draw 1.8 A from a 24 V DC supply so the controller can drive the solenoids without external amplifiers. A DIN EN 175201-804 connector provides the electrical interface, enabling quick replacement in the field. The housing is sealed to IP65, keeping dust and water jets away from the electronics during mobile or industrial operation. Hydraulic ports follow the ISO 4401-07-06-0-94 pattern, making the unit interchangeable with standard subplates. The main stage passes up to 150 L/min at a 10 bar pressure drop, while tolerating line pressures as high as 350 bar.
The valve operates with hydraulic fluid between −20 °C and +80 °C, permitting use with common mineral oils in temperate or warm environments. Internal channels feed and return the pilot oil, removing the need for external supply hoses and limiting return port pressure to 30 bar. System cleanliness must reach ISO 4406 code 20/18/15 to prevent spool scoring and maintain accurate flow control. Hysteresis does not exceed 6 percent, so commanded position changes translate to predictable flow adjustments. A flow-optimized spool keeps total weight to 13.6 kg, allowing installation on manifolds without reinforcement. The consolidated pilot circuits also minimize external leakage paths and simplify manifold layouts.
Technical Specifications
Cleanliness Class (main Valve)
ISO 4406 20/18/15
Command Input
±10 V
Current Consumption (obe)
1.8 A
Electrical Connection
DIN EN 175201-804
Fluid Temperature
-20 to +80 °C
Hysteresis
≤ 6%
Ingress Protection
IP65
Max Operating Pressure (main)
350 bar
Nominal Flow (Δp 10 Bar)
150 L/min
Pilot Oil Drain
Internal
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-07-06-0-94
Return Port Pressure (internal Drain)
30 bar
Supply Voltage
24 V DC
Weight
13.6 kg
1620 Old Apex Road
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