Bosch Rexroth | 4WRZE25W6-220-7X6EG24N9K31F1V
4WRZE25W6-220-7X/6EG24N9K31/F1V
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The 4WRZE25W6-220-7X/6EG24N9K31/F1V proportional directional valve is manufactured by Bosch Rexroth within the WRZ Proportional Directional Valves series. It modulates flow and direction in hydraulic automation systems where precise position and speed control are required. Valve size 25 passes large volumes without excessive pressure drop. At a 10 bar differential the main stage delivers 220 l/min to actuators. The assembly withstands up to 350 bar on the main ports, allowing use in high-pressure circuits. Pilot oil supply and pilot oil drain are both external, so pilot flow is isolated from internal tank pressure. Approved operating media are mineral oil grades HL or HLP defined by DIN 51524. Mounting follows the ISO 4401 porting pattern for interchangeability with standard subplates. The enclosure is rated IP65, keeping dust and water jets away from electrical parts.
Electrical actuation uses a 4 to 20 mA command signal that integrates with common controllers. A 15 percent command value overlap establishes a neutral zone that prevents unintended spool movement near zero current. Coil power is supplied at 24 VDC through a connector built to DIN EN 175201-804. The winding is designed for a 100 percent duty cycle, so continuous energization does not require derating. Insulation must stay below the 150 °C coil temperature limit to avoid thermal damage. A concealed manual override permits local spool shifting during commissioning or in the event of power loss. The assembled unit weighs 18.4 kg in subplate mounting configuration, which dictates manifold support requirements. These electrical details complement the hydraulic characteristics introduced earlier to provide balanced proportional control.
Technical Specifications
Command Input Signal
4 to 20 mA
Command Value Overlap
15%
Degree Of Protection
IP65
Duty Cycle
100%
Electrical Connection
DIN EN 175201-804
Hydraulic Fluid
Mineral Oil (HL, HLP) To DIN 51524
Manual Override
Concealed
Max Coil Temperature
150 °C
Max Main Valve Pressure
350 bar
Nominal Flow (10 Bar Dp)
220 l/min
Pilot Oil Drain
External
Pilot Oil Supply
External
Porting Pattern
ISO 4401
Supply Voltage
24 VDC
Valve Size
25
Weight (subplate Mounting)
18.4 kg
1620 Old Apex Road
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