Bosch Rexroth | 4WRZ16W8-150-7X6EG24N9ETK4V
4WRZ16W8-150-7X/6EG24N9ETK4/V
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The 4WRZ16W8-150-7X/6EG24N9ETK4/V proportional directional valve belongs to the WRZ Proportional Directional Valves series and is manufactured by Bosch Rexroth for hydraulic automation tasks. It controls spool position with an electromagnetic assembly that has a coil resistance of 4.8 Ω at 20 °C, allowing drive electronics to calculate voltage and current. The solenoid can be energized continuously because the duty cycle is 100 %, and it is designed for direct current supplies as defined by the type of voltage being DC. A maximum solenoid current of 1.5 A protects the coil against overheating, while the winding insulation tolerates a coil temperature up to 150 °C before derating. Electrical power reaches the unit through a DIN EN 175301-803 connector, and the IP65 protection rating guards internal parts from dust and water jets during wash-down. System accuracy is influenced by hysteresis held to no more than 6 %, which limits deviation between command signal and actual flow.
The valve mounts on subplates using an ISO 4401-07-06-0-94 interface so it can replace similar size components without altering manifold geometry. With a nominal flow of 150 l/min at a 10 bar pressure drop, it supplies medium-capacity circuits, and the main stage can withstand operating pressures up to 350 bar. Valve size 16 defines the port layout and flow cavities, while an overall weight of 13.4 kg affects handling during maintenance. FKM seals are installed to resist common hydraulic oils and elevated temperatures. Pilot oil is supplied and drained internally, removing the need for external lines. A concealed manual override labeled N9 lets technicians shift the spool during commissioning or power loss without exposing unprotected push pins.
Technical Specifications
Coil Resistance (20°c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803
Hysteresis
≤ 6%
Manual Override
Concealed (N9)
Max Coil Temperature
150 °C
Max Operating Pressure (main)
350 bar
Max Solenoid Current
1.5 A
Mounting Interface
ISO 4401-07-06-0-94
Nominal Flow (Δp=10 Bar)
150 l/min
Pilot Oil Supply/drain
Internal/Internal
Protection Rating
IP65
Seal Material
FKM
Type Of Voltage
DC
Valve Size
16
Weight
13.4 kg
1620 Old Apex Road
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