Bosch Rexroth | 4WEH22E7X6EG24N9DA
4WEH22E7X/6EG24N9DA
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The 4WEH22E7X/6EG24N9DA valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series and directs hydraulic flow in automated machinery. It is spring-centered so the spool returns to its neutral position without power, and it offers 3 discrete spool positions that create a 4-way flow path for tasks such as cylinder extension and retraction. The nominal size of 25 supports a maximum flow of 450 l/min while maintaining acceptable pressure drop. Working ports p, A, and B tolerate up to 280 bar, and proper shifting is achieved when pilot supply exceeds 10.5 bar but does not surpass the 210 bar limit. A 24 V DC coil energizes the solenoids, and a concealed manual override (N9) allows local actuation during commissioning or power loss.
Installation follows the ISO 4401-08-08-0-05 subplate pattern, and tightening the mounting screws to 100 Nm secures the body against leakage. Pilot oil returning through port y may reach 210 bar, so downstream plumbing must be rated accordingly. Cleanliness of the pressure fluid must meet ISO 4406 class 20/18/15(c) to prevent spool wear and support the mean time to dangerous failure of 100 years. The valve weighs 11.9 kg, which must be considered during handling and maintenance. These mounting, pressure, and fluid quality limits ensure predictable response across the specified duty cycle.
Technical Specifications
Centering
Spring-Centered
Hydraulic Cleanliness Class
ISO 4406 20/18/15 (c)
Manual Override
Concealed (N9)
Max Flow (3-spool, Spring-centered)
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (spring-centered)
10.5 bar
Mounting Pattern
ISO 4401-08-08-0-05
Mounting Screw Torque
100 Nm
Mttfd
100 years
Nominal Size (ng)
25
Pilot Oil Return (y) Max Pressure
210 bar
Rated Voltage
24 V DC
Spool Positions
3
Way Configuration
4-Way
Weight (2 Solenoids, Spring-centered)
11.9 kg
1620 Old Apex Road
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