Bosch Rexroth | 4WRZE16W8-150-7X6EG24N9EK31F1D3V
4WRZE16W8-150-7X/6EG24N9EK31/F1D3V
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The 4WRZE16W8-150-7X/6EG24N9EK31/F1D3V valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and modulates flow and direction in hydraulic drives for automation equipment. Its coils run on a 24 V DC supply voltage, matching common control power in machinery. A 4–20 mA command input range positions the spool proportionally so a PLC can vary actuator speed and force. The main stage tolerates 350 bar operating pressure, allowing use in high-pressure circuits, while a nominal flow of 150 l/min at a 10 bar pressure drop delivers adequate volume for mid-size cylinders. The spool follows the W8 symbol to establish four-way metering characteristics. Mounting uses the ISO 4401-07-06-0-94 pattern, enabling direct installation on standard subplates. Pilot control is provided by a size 6 valve, and the pilot oil is supplied and drained externally so load-induced pressures do not influence the pilot stage.
The housing is sealed to IP65 to prevent water or dust ingress in industrial environments. Electrical connection is via a DIN EN 175201-804 plug, which permits quick coil changes. A concealed manual override designated N9 lets technicians shift the spool during setup without removing covers. Port Y may be pressurized to 30 bar, and external return flow at port T is permitted up to 250 bar, protecting the pilot and tank lines. An integrated pressure reducing valve, type ZDR 6 DP0-4X/40YM-W80, keeps pilot pressure stable under varying supply conditions. FKM seals withstand elevated temperatures and aggressive hydraulic fluids to extend service intervals. The complete assembly weighs 13.6 kg, allowing a single installer to position the valve on a manifold without lifting equipment.
Technical Specifications
Command Input
4–20 mA (F1)
Degree Of Protection
IP65
Electrical Connector
DIN EN 175201-804
Manual Override
Concealed (N9)
Max Operating Pressure (main)
350 bar
Max Port Y Pressure
30 bar
Max Return Pressure Port T (external)
250 bar
Nominal Flow (Δp 10 Bar)
150 l/min
Pilot Oil Supply/drain
External
Pilot Valve Size
6 (6E)
Porting Pattern
ISO 4401-07-06-0-94
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Seal Material
FKM
Spool Symbol
W8
Supply Voltage
24 V DC
Weight
13.6 kg
1620 Old Apex Road
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