Bosch Rexroth | 4WRTE25V220L-4X6EG24K31A1M
4WRTE25V220L-4X/6EG24K31/A1M
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The 4WRTE25V220L-4X/6EG24K31/A1M directional control valve is manufactured by Bosch Rexroth for the 4WRTE Directional Control Valves series to regulate flow and pressure in hydraulic automation circuits. It uses nominal size 25 passages that accommodate a rated flow of 220 l/min at a 5 bar differential, giving rapid response to actuator demands. A linear flow characteristic keeps the relationship between command signal and flow predictable, while spool symbol V defines the metering edges used to distribute fluid between ports. The valve withstands 350 bar in ports p, a, and b, permitting use in high-pressure systems. Control electronics accept a ±10 V interface signal for proportional commands, and a 24 V DC supply voltage powers the driver stage. NBR seals maintain compatibility with common mineral oils, and the body mounts on an ISO 4401-08-08-0-05 pattern for direct stack installation.
An NG6 pilot control valve actuates the main spool, and pilot oil flow from 0 to 20 l/min moves the spool smoothly across its stroke. Both pilot oil supply and return are external, so manifold designers can isolate pilot lines from main flow paths, with the external return tolerating pressures up to 250 bar. Wiring is completed through a DIN EN 175201-804 K31 connector, providing a standardized electrical interface for field service. The design permits hydraulic fluid temperatures up to 80 °C, allowing operation in systems with moderate heat buildup. Overall weight is 16.8 kg, a consideration for manifold support and handling during maintenance.
Technical Specifications
Electrical Connection
DIN EN 175201-804 (K31)
Flow Characteristic
Linear
Interface Signal
±10 V
Max Hydraulic Fluid Temperature
80 °C
Max Operating Pressure (p,a,b)
350 bar
Mounting Interface
ISO 4401-08-08-0-05
Nominal Size
25
Pilot Control Valve Size
NG6
Pilot Oil Flow (step 0–100%)
20 l/min
Pilot Oil Supply/return
External/External
Pilot Return Max Pressure (external)
250 bar
Rated Flow
220 l/min (Δp=5 bar)
Seal Material
NBR
Spool Symbol
V
Supply Voltage
24 V DC
Weight
16.8 kg
1620 Old Apex Road
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