Bosch Rexroth | 4WRZ16W8-150-7X6EG24N9ETK4D3V
4WRZ16W8-150-7X/6EG24N9ETK4/D3V
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The 4WRZ16W8-150-7X/6EG24N9ETK4/D3V proportional directional valve is built by Bosch Rexroth as part of the WRZ Proportional Directional Valves series for closed-loop hydraulic motion control in industrial automation. It operates on a 24 V DC solenoid coil so that it can be driven directly by common PLC outputs, and the coil resistance of 4.8 Ω defines the current draw for accurate current-controlled actuation. A maximum coil current of 1.5 A limits the driver requirement and prevents overheating during continuous modulation. The DIN EN 175301-803 connector simplifies installation with standardized pin assignments, and a concealed N9 manual override allows technicians to shift the spool during setup without exposing moving parts. The assembly carries an IP65 protection class to resist dust and water jets in machine environments, while a permissible coil temperature of 150 °C ensures service continuity under elevated oil temperatures. Hysteresis remains at or below 6 % to provide repeatable flow response when the command signal reverses.
Its ISO 4401-07-06-0-94 porting pattern aligns with common subplates so mounting into existing manifolds requires no drilling changes, and a nominal flow of 150 l/min at a 10 bar pressure drop supports medium-sized actuators without excessive restriction. The main stage tolerates 350 bar to suit high-pressure supply circuits, whereas the internal T port is limited to 30 bar to protect return lines. Both pilot oil supply and pilot oil drain are internal, removing the need for external pilot hoses and simplifying plumbing. An FKM seal set resists mineral oils and higher fluid temperatures for longer service intervals, and the subplate-mounted unit weighs 13.4 kg which permits single-person handling during maintenance.
Technical Specifications
Coil Resistance (20°c)
4.8 Ω
Coil Voltage
24 V DC
Electrical Connection
DIN EN 175301-803
Hysteresis
≤ 6 %
Manual Override
Concealed (N9)
Max Coil Current
1.5 A
Max Coil Temperature
150 °C
Max Main Valve Pressure
350 bar
Max T Port Pressure (internal)
30 bar
Nominal Flow (10 Bar Δp)
150 l/min
Pilot Oil Drain
Internal
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-07-06-0-94
Protection Class
IP65
Seal Material
FKM (V)
Weight (subplate Mounting)
13.4 kg
1620 Old Apex Road
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