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The 4WRZ16E1-100-7X/6EG24N9K4/V proportional directional valve is produced by Bosch Rexroth as part of the WRZ Proportional Directional Valves series and is intended to control flow and direction in hydraulic automation systems. It uses nominal size 16 interfaces so it fits medium-frame manifold layouts, and it is secured by subplate mounting that allows quick replacement without disturbing pipework. The porting pattern follows ISO 4401-07-06-0-94, ensuring compatibility with standardized subplates. A nominal flow of 100 l/min at a 10 bar differential defines its regulated capacity, while the main stage tolerates continuous operating pressure up to 350 bar. When the spool is fully shifted the valve can pass up to 460 l/min, supporting cylinders or motors that demand high displacement rates.
A proportional pilot solenoid with a detachable coil actuates the main stage, and the coil is rated for 24 V DC to match common mobile and industrial power supplies. Electrical termination is provided through a DIN EN 175301-803 plug, simplifying field wiring. The pilot circuit draws oil from an external supply and returns it through an external drain, reducing the influence of tank back pressure; this layout is sized around a pilot valve size 6. Back pressure at the T port can reach 250 bar without harming the unit, and overall control accuracy is supported by a maximum hysteresis of 6 percent. A concealed manual override identified as N9 lets maintenance staff shift the spool mechanically during setup, and FKM seals protect internal passages when the medium contains higher-temperature or chemically aggressive fluids.
Coil Voltage
24 V DC
Electrical Connection
DIN EN 175301-803
Hysteresis (max)
6%
Manual Override
Concealed (N9)
Max Main Valve Flow
460 l/min
Max Operating Pressure (main)
350 bar
Max T-port Pressure (external Drain)
250 bar
Mounting Type
Subplate Mounting
Nominal Flow (Δp=10 Bar)
100 l/min
Nominal Size
16
Pilot Oil Drain
External
Pilot Oil Supply
External
Pilot Solenoid
Proportional (Detachable Coil)
Pilot Valve Size
6
Porting Pattern
ISO 4401-07-06-0-94
Seals
FKM
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