Bosch Rexroth | 4WRZE16E100-7X6EG24N9K31A1D3V
4WRZE16E100-7X/6EG24N9K31/A1D3V
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The 4WRZE16E100-7X/6EG24N9K31/A1D3V proportional directional valve belongs to the WRZ Proportional Directional Valves series and is manufactured by Bosch Rexroth. It adjusts flow and direction in hydraulic automation circuits by varying spool position in response to an electrical command. The unit is built around nominal size 16 hardware and delivers a nominal flow of 100 L/min when the pressure drop across the main stage is 10 bar. It withstands a main pressure of up to 350 bar while keeping the return line at port T safe up to 250 bar. The pilot stage draws oil internally and releases it through an external drain, an arrangement that limits contamination in the tank line. Mounting follows the ISO 4401-07-06-0-94 porting pattern, and the subplate version weighs 13.6 kg for stable installation. On the electrical side, a 24 V DC supply energizes a coil with a cold resistance of 2 Ω, providing the electromagnetic force needed to shift the spool.
Spool position is commanded by a ±10 V analog reference, allowing closed-loop controllers to center the signal at zero for neutral flow. During operation the solenoid draws up to 1.8 A, so drive amplifiers must be sized for that peak value. The valve connects through the DIN EN 175201-804 interface, which simplifies field wiring in modular manifolds. A concealed manual override lets maintenance personnel shift the spool without electrical power, while the IP65 housing keeps dust and low-pressure water jets from entering the coil cavity. Magnetic feedback and machining quality limit hysteresis to 6 percent or less, improving repeatability during small command changes. Continuous duty is supported by thermal insulation that allows the coil to reach 150 °C without damage, ensuring stable performance when mounted near hot power packs.
Technical Specifications
Coil Resistance (cold, 20°c)
2 Ω
Command Signal
±10 V (A1)
Electrical Connection
DIN EN 175201-804 (K31)
Hysteresis
≤6%
Ingress Protection
IP65
Manual Override
Concealed (N9)
Max Coil Temperature
150 °C
Max Current Consumption
1.8 A
Max Operating Pressure (main)
350 bar
Max Return Pressure Port T (ext Drain)
250 bar
Nominal Flow
100 L/min (Δp=10 bar)
Nominal Size
16
Pilot Supply/drain
Internal Supply, External Drain (E)
Porting Pattern
ISO 4401-07-06-0-94
Supply Voltage
24 V DC
Weight (subplate, Size 16)
13.6 kg
1620 Old Apex Road
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