Bosch Rexroth | 4WRZE25W8-325-7X6EG24N9EK31F1V
4WRZE25W8-325-7X/6EG24N9EK31/F1V
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The 4WRZE25W8-325-7X/6EG24N9EK31/F1V is manufactured by Bosch Rexroth for the WRZ Proportional Directional Valves series and serves to modulate flow and direction in hydraulic automation loops. With a nominal size of 25, the valve suits medium-capacity circuits that still demand fine proportional control. Its mounting surface follows ISO 4401-08-07-0-94 so installation on standard subplates is direct. At a differential pressure of 10 bar it passes 325 l/min, while the fully opened main stage allows 870 l/min to cover peak demand. The body withstands operating pressures up to 350 bar, enabling use on high-pressure power units. A 4–20 mA command signal positions the spool proportionally, and the onboard electronics draw 24 V DC through a connector built to DIN EN 175201-804. FKM seals confine the hydraulic medium and resist chemically aggressive fluids.
The main stage requires oil cleanliness of ISO 4406 class 20/18/15 to keep clearances free of abrasive particles, while the pilot stage needs a tighter class 18/16/13 to protect its fine orifices. An IP65 enclosure prevents dust ingress and withstands water jets when the cable gland is secured. A concealed manual override lets service staff shift the spool mechanically during commissioning or fault tracing. Drain port Y tolerates 30 bar so remote tank returns can be routed through restrictive lines, and external return port T accepts 250 bar without compromising response. In subplate form the assembly weighs 18.4 kg, remaining light enough for single-person handling with routine lifting aids.
Technical Specifications
Cleanliness Class (main)
20/18/15 (ISO 4406)
Cleanliness Class (pilot)
18/16/13 (ISO 4406)
Command Signal
4-20 mA
Degree Of Protection
IP65
Electrical Connection
DIN EN 175201-804
Manual Override
Concealed
Max Main Flow
870 l/min
Max Operating Pressure
350 bar
Max Pressure Port Y
30 bar
Max Return Pressure Port T (ext)
250 bar
Mounting Interface
ISO 4401-08-07-0-94
Nominal Flow (Δp=10 Bar)
325 l/min
Nominal Size
25
Seal Material
FKM
Supply Voltage
24 V DC
Weight (subplate Mounting)
18.4 kg
1620 Old Apex Road
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