Bosch Rexroth | 4WRZ16E1-100-7X6EG24N9ETK4D3V
4WRZ16E1-100-7X/6EG24N9ETK4/D3V
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The 4WRZ16E1-100-7X/6EG24N9ETK4/D3V proportional directional valve is produced by Bosch Rexroth for the WRZ Proportional Directional Valves series and is intended to meter flow in hydraulic automation circuits. The valve size is 16, providing a nominal flow of 100 l/min at a 10 bar pressure drop so mid-range actuators receive stable volume. A maximum operating pressure of 350 bar on the main ports supports high-pressure installations, while the return port handles up to 30 bar. The E1 spool symbol defines the flow paths available in neutral and actuated states, and installation follows the ISO 4401-07-06-0-94 interface for compatibility with standard subplates. Pilot supply and drain are both internal, coded ET, which removes the need for external pilot lines and restricts pilot oil flow to 5.5 l/min across the 0 to 100 percent command range. An integrated D3 pressure-reducing valve stabilizes pilot pressure and improves proportional control accuracy.
A solenoid coil with a resistance of 4.8 Ω at 20 °C draws up to 1.5 A, and the winding is rated for a 100 percent duty cycle so continuous energization does not overheat the assembly. Electrical connection is made through a DIN EN 175301-803 plug, allowing rapid replacement during service. A concealed manual override, identified as N9, enables technicians to shift the spool mechanically during commissioning or power loss. The enclosure carries an IP65 protection rating, preventing dust ingress and guarding against low-pressure water jets in industrial settings. Flow repeatability is aided by hysteresis limited to 6 percent, ensuring predictable metering during fine position control.
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 Current
1.5 A
Max Operating Pressure (main)
350 bar
Max Return Pressure (port T)
30 bar
Mounting Interface
ISO 4401-07-06-0-94
Nominal Flow (Δp=10 Bar)
100 l/min
Pilot Oil Flow (0→100%)
5.5 l/min
Pilot Supply/drain
Internal/Internal (ET)
Pressure Reducing Valve
D3
Spool Symbol
E1
Type Of Protection
IP65
Valve Size
16
1620 Old Apex Road
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