Bosch Rexroth | 4WRL25W3-350S-3XG24Z4WX02M-799
4WRL25W3-350S-3X/G24Z4/WX02M-799
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The 4WRL25W3-350S-3X/G24Z4/WX02M-799 valve is built by Bosch Rexroth within the 4WRL Solenoid Valves series for proportional control tasks in hydraulic automation. It operates on a 24 V DC supply, and its coil draws up to 2.7 A, a level set by a resistance of 2.5 Ω measured at 20 °C to ensure predictable current rise. Electrical termination is through a DIN 43650 / ISO 4400 connector, allowing rapid replacement in field service. An IP65 protection class shields the housing from dust and low-pressure water, so the valve can be installed near machinery. The mounting pattern follows ISO 4401-08-07-0-94, letting the NG25 body bolt directly to standard subplates. Low hysteresis of no more than 0.1 % keeps command deviations minimal during fine positioning. At 18 kg the unit requires secure support but remains manageable for a single technician during maintenance.
The hydraulic section is rated for a maximum flow of 900 L/min, giving the actuator enough oil volume for large cylinders or motors. Pressure capability reaches 350 bar on the P, A, and B ports while the T, X, and Y lines are limited to 250 bar, defining safe circuit design limits. Pilot stages work between 10 bar and 250 bar, so the control oil must stay within this window for consistent spool movement. Under 100 bar supply, the main stage leaks 1000 cm³/min, a figure used when sizing return and cooling lines. Dynamic response from 0 to 100 % command is 45 ms, supporting applications that need quick load changes. Combined, these hydraulic figures match the electrical data above to deliver a balanced valve for closed-loop flow or pressure regulation without external gearing.
Technical Specifications
Coil Resistance (20 °c)
2.5 ohm
Electrical Connector
DIN 43650/ISO 4400
Hysteresis
≤ 0.1%
Main Stage Leakage (100 Bar)
1000 cm3/min
Max Flow
900 l/min
Max Pressure (p/a/b)
350 bar
Max Pressure (t/x/y)
250 bar
Max Solenoid Current
2.7 A
Mounting Pattern
ISO 4401-08-07-0-94
Nominal Size
NG25
Pilot Oil Pressure Max
250 bar
Pilot Oil Pressure Min
10 bar
Protection Class
IP65
Response Time 0–100% (x=100 Bar)
45 ms
Supply Voltage
24 V DC
Weight
18 kg
1620 Old Apex Road
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