Bosch Rexroth | 4WRTE25E1-220L-4X6EG24EK31A1M
4WRTE25E1-220L-4X/6EG24EK31/A1M
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The 4WRTE25E1-220L-4X/6EG24EK31/A1M valve belongs to the 4WRTE Directional Control Valves series and is manufactured by Bosch Rexroth for closed-loop hydraulic automation systems. It is driven by a 24 V DC supply voltage that powers the integrated solenoids and electronics. A ±10 V command signal positions the spool, while an input resistance of 100 kΩ allows the unit to interface directly with proportional amplifiers without excessive load. Peak current consumption is limited to 1.6 A so cable sizing and power supplies can be selected accordingly, and the overall electrical demand is capped at 72 VA. The coil can tolerate temperatures up to 150 °C, supporting continuous duty in warm manifolds. An IP65 protection class seals the housing against dust and low-pressure jets of water. Spool movement shows hysteresis of no more than 0.1 %, providing precise repeatability when metering flow.
The valve handles a rated flow of 220 l/min at a 5 bar pressure drop per edge, enabling accurate control of medium-capacity actuators, yet it can pass up to 870 l/min during brief high-demand events. The main stage is built for operating pressures to 350 bar, while the pilot supply may reach 315 bar, letting designers share pilot lines with high-pressure circuits. Pilot oil flow of 20 l/min across the full control range establishes the minimum capacity for pilot pumps and orifices. When an external pilot return is used, port T may see pressures up to 250 bar, so downstream plumbing must match this figure. A cleanliness class of ISO 4406 18/16/13 is required to maintain spool clearance and prevent sticking. The assembled unit weighs 16.8 kg, a factor considered when sizing mounting plates and support brackets.
Technical Specifications
Cleanliness Class
ISO 4406 18/16/13
Command Signal Range
±10 V
Current Consumption Max
1.6 A
Hysteresis
≤ 0.1%
Input Resistance
100 kΩ
Max Flow (recommended)
870 l/min
Max Operating Pressure
350 bar
Maximum Coil Temperature
150 °C
Maximum Power Consumption
72 VA
Pilot Oil Flow (0→100% @315 Bar)
20 l/min
Pilot Supply Max Pressure
315 bar
Port T Max Pressure (ext Pilot Return)
250 bar
Protection Class
IP65
Rated Flow
220 l/min (∆p=5 bar/edge)
Supply Voltage
24 V DC
Weight
16.8 kg
1620 Old Apex Road
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