Bosch Rexroth | 3FREX6B-1X35L2G24-25N9Z4MM
3FREX6B-1X/35L2G24-25N9Z4MM
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The 3FREX6B-1X/35L2G24-25N9Z4MM proportional flow control valve is produced by Bosch Rexroth and belongs to the 3FRE Flow Control Valves series. It meters hydraulic fluid in automation circuits where electronic setpoints regulate actuator speed. With a nominal size of 6 (NG6), the valve fits a subplate installation that conforms to ISO 4401-03-02-0-05, allowing direct mounting under standard manifold blocks. A linear flow characteristic ensures that piston position changes translate proportionally into flow variation, while the valve handles up to 35 l/min as its nominal flow to cover medium-capacity lines. The electronics accept a +10 V setpoint to call for maximum flow when the valve is normally closed, and the on-board electronics run from a 24 V DC supply to match common machine control voltages.
Peak coil demand is limited to 2.5 A, so drive cards can size their outputs accordingly, and the DIN 43650-AM2 connector provides a quick disconnect for that wiring. The assembly tolerates working pressures up to 250 bar, supporting high-pressure industrial circuits. There is no integrated check valve, so reverse flow must be managed by external components, and pressure compensator closing is also absent, leaving throughput dependent on upstream pressure stability. Residual flow returns through port P when the spool approaches the closed position. A covered manual override lets maintenance staff shift the spool without energizing the solenoid, and NBR seals resist mineral oil exposure while maintaining leak-tight performance.
Technical Specifications
Check Valve
None
Electrical Connection
DIN 43650-AM2
Electronics Supply Voltage
24 V DC
Flow Characteristic
Linear
Manual Override
Covered
Max Working Pressure
250 bar
Mounting
Subplate
Mounting Interface
ISO 4401-03-02-0-05
Nominal Flow
35 l/min
Nominal Size
6 (NG6)
Pressure Compensator Closing
Without
Residual Flow Port
P
Seal Material
NBR
Setpoint Input
+10 V, Qmax (NC)
Solenoid Current Max
2.5 A
1620 Old Apex Road
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