Bosch Rexroth | 4WRTE25V350L-4X6EG24EK31A1M
4WRTE25V350L-4X/6EG24EK31/A1M
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The 4WRTE25V350L-4X/6EG24EK31/A1M valve belongs to the 4WRTE Directional Control Valves series and is produced by Bosch Rexroth. It regulates hydraulic flow and direction in automation circuits by combining an electrohydraulic signal stage with a pilot-operated spool. The integrated electronics run on a nominal 24 V DC supply, and a maximum current draw of 1.6 A defines the power required from the control cabinet. A ±10 V command signal positions the spool, while a matching ±10 V actual value output allows the controller to monitor movement in closed-loop mode. Response sensitivity of 0.05 % enables small position changes to be converted into proportional flow shifts, and a hysteresis of 0.1 % keeps deviation between command and actual positions minimal. The housing carries an IP65 protection class so the valve tolerates dust and low-pressure water jets during machine operation. Electrical connection is made through the K31 plug according to DIN EN 175201-804, ensuring interchangeability with standard harnesses.
The valve is built in size NG25, giving port dimensions suited to systems that demand high throughput. Under a differential pressure of 5 bar it supplies a rated flow of 350 l/min, allowing rapid actuator motion in large machines. Ports P, A, and B withstand operating pressures up to 350 bar, and the external return line at port T may carry up to 250 bar without damage. Pilot oil is taken internally, removing the need for an external pilot supply line and simplifying manifold layouts. An NBR seal set prevents leakage while maintaining compatibility with typical mineral oils. A 100 % relative duty cycle means the valve can modulate continuously without thermal rest periods. The assembled unit weighs 16.8 kg, which guides mounting hardware selection and crane requirements during installation.
Technical Specifications
Actual Value Output
±10 V
Command Signal
±10 V
Current Consumption (max)
1.6 A
Electrical Connection
K31 (DIN EN 175201-804)
Hysteresis
0.1%
Max Operating Pressure (p, A, B)
350 bar
Max Return Pressure (port T, External)
250 bar
Pilot Oil Supply
Internal
Protection Class
IP65
Rated Flow (Δp=5 Bar)
350 l/min
Relative Duty Cycle
100%
Response Sensitivity
0.05%
Seal Material
NBR
Size (ng)
25
Supply Voltage (nominal)
24 V DC
Weight
16.8 kg
1620 Old Apex Road
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