Bosch Rexroth | 4WRZE16W9-150-7X6EG24N9ETK31A1D3V
4WRZE16W9-150-7X/6EG24N9ETK31/A1D3V
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The 4WRZE16W9-150-7X/6EG24N9ETK31/A1D3V valve belongs to the WRZ Proportional Directional Valves series and is manufactured by Bosch Rexroth for hydraulic automation where precise flow control is needed. A nominal size of 16 defines the porting geometry, matching medium-frame manifolds in industrial power units. The unit delivers a nominal flow of 150 l/min at a 10 bar pressure drop so actuators can be moved at consistent speeds. A maximum operating pressure of 350 bar allows use in high-pressure circuits without external pressure reducers. A supply voltage of 24 VDC within a 19–35 VDC range feeds the onboard amplifier, while a command signal of ±10 V provides the control input from the motion controller. Peak current demand stays at 1.8 A, enabling the coil to generate the required magnetic force without oversizing the power supply. An electrical connector compliant with DIN EN 175201-804 (coded K31) makes plug-in wiring straightforward during maintenance.
Pilot supply and drain are both internal, identified as the ET configuration, which removes the need for external pilot lines in compact hydraulic blocks. The internal return port tolerates 30 bar, allowing back-pressure in the tank line without affecting spool positioning. Fluid temperature can range from –20 °C to +80 °C so the valve remains stable in cold starts and warm operating conditions. A permitted viscosity span of 20 to 380 mm²/s ensures predictable damping across common oil grades. Operation with mineral oil HL or HLP to DIN 51524 maintains compatibility with standard plant fluids. Hysteresis stays at or below 6 %, supporting repeatable positioning when the command signal reverses. FKM seals resist heat and fluid aging, extending service intervals. A total weight of 13.6 kg keeps the assembly manageable for single-person installation on manifold stacks.
Technical Specifications
Command Signal Input
±10 V (A1)
Electrical Connector
DIN EN 175201-804 (K31)
Fluid Temperature Range
-20 to +80 °C
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Hysteresis
≤ 6%
Max Current Consumption
1.8 A
Max Operating Pressure (main)
350 bar
Nominal Flow (Δp = 10 Bar)
150 l/min
Nominal Size
16
Pilot Supply And Drain
Internal/Internal (ET)
Return Pressure Port T (internal)
30 bar
Seal Material
FKM
Supply Voltage
24 VDC (19–35 VDC)
Viscosity Range
20 to 380 mm²/s
Weight
13.6 kg
1620 Old Apex Road
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