Bosch Rexroth | 4WRZ16E150-7X6EG24N9EK4D3V
4WRZ16E150-7X/6EG24N9EK4/D3V
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The 4WRZ16E150-7X/6EG24N9EK4/D3V proportional directional valve belongs to the WRZ Proportional Directional Valves series manufactured by Bosch Rexroth for hydraulic automation where controlled flow direction is required. Its nominal size 16 defines the mounting interface and flow passages, while a nominal flow of 150 l/min at a 10 bar differential provides the capacity for medium-to-high volume circuits. A maximum operating pressure of 350 bar lets the main stage function in high-pressure systems, and the pilot stage is preset to 40 bar to ensure stable spool positioning. The cleanliness class ISO 4406 20/18/15 stipulates the allowable particle count in the working fluid to safeguard the precision metering edges. Compatibility with mineral oil HL or HLP according to DIN 51524 identifies the accepted hydraulic medium. A fluid temperature range of –20 °C to +80 °C and a viscosity window of 20 to 380 mm²/s outline the operating envelope for reliable lubrication and damping.
The electrical section is driven by a 24 V DC supply, and a coil resistance of 4.8 Ω at 20 °C determines the steady-state current draw. A peak solenoid current limit of 1.5 A defines the maximum control signal the amplifier may supply without overloading the winding. Wiring is completed through a DIN EN 175301-803 connector, which streamlines installation and service replacement. An IP65 protection class shields the unit against dust ingress and water jets so the valve can be mounted outside sealed cabinets. Hysteresis is held to ≤ 6 %, promoting repeatable flow control across the command range. The return port permits external drainage up to 250 bar, allowing the valve to function in circuits with elevated tank back-pressure. Finally, a mass of 13.4 kg influences bracket design and handling requirements during assembly.
Technical Specifications
Cleanliness Class (main Valve)
ISO 4406 20/18/15
Coil Resistance (20 °c)
4.8 Ω
Electrical Connection
DIN EN 175301-803
Fluid Temperature Range
–20 to +80 °C
Fluid Type
Mineral Oil (HL, HLP) DIN 51524
Hysteresis
≤ 6%
Max Operating Pressure (main)
350 bar
Max Solenoid Current
1.5 A
Nominal Flow (Δp=10 Bar)
150 l/min
Nominal Size
16
Pilot Pressure Setting (d3)
40 bar
Protection Class
IP65
Rated Voltage
24 V DC
Return Port T Pressure (ext. Drain)
250 bar
Viscosity Range
20 to 380 mm²/s
Weight
13.4 kg
1620 Old Apex Road
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