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The 4WRKE16E1-200L-3X/6EG24EK31/A1D3M directional valve is manufactured by Bosch Rexroth for the 4WRKE Directional Valves series. It meters hydraulic flow in automated machinery by moving a spool in response to a ±10 V command signal, enabling closed-loop position control. The nominal size of 16 defines the flow section and mounting envelope, while the ISO 4401-07-06-0-94 porting pattern aligns with standard subplates to streamline installation. A nominal flow of 200 L/min at a 10 bar pressure drop delivers predictable volume control, and the design withstands operating pressures up to 350 bar for high-pressure circuits. Internal electronics operate from a 24 V DC supply and draw 72 W at peak with a 24 W average demand.
For pilot operation, the valve uses internal supply with an external drain to minimize back-pressure on control passages. A maximum permissible flow of 460 L/min guards the main stage against overload during transient demand. Acceptable fluid viscosities range from 20 to 380 mm²/s, and temperatures may vary between –20 °C and +80 °C, keeping the unit stable with common hydraulic oils. The cleanliness requirement of ISO 4406 20/18/15 limits particulate contamination in the main stage. An integrated pressure-reducing valve type ZDR 6 DP0-4X/40YM-W80 stabilizes pilot pressure, while NBR seals contain the medium. The housing meets IP65 for protection against dust and low-pressure water jets, and the assembled valve weighs 11.2 kg for manageable handling.
Cleanliness Class (main Valve)
ISO 4406 20/18/15
Command/actual Value
±10 V (A1)
Fluid Temperature Range
−20 to +80 °C
Max Operating Pressure (p,a,b)
350 bar
Max Permissible Flow
460 L/min
Nominal Flow (Δp=10 Bar)
200 L/min
Nominal Size
16
Pilot Supply/drain
Internal Supply, External Drain
Porting Pattern
ISO 4401-07-06-0-94
Power (max/average)
72 W / 24 W
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Seal Material
NBR
Supply Voltage
24 V DC
Valve Protection
IP65
Viscosity Range
20 to 380 mm²/s
Weight
11.2 kg
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