Bosch Rexroth | 4WEH22G7X6EW110N9TS2DA
4WEH22G7X/6EW110N9TS2DA
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The 4WEH22G7X/6EW110N9TS2DA valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth for hydraulic actuation circuits. It is energized by a 110 V AC solenoid operating at 50 or 60 Hz so that standard plant power can shift the spool. The flow path accepts up to 250 l/min at 210 bar on spool configuration G, allowing the unit to drive large cylinders without excessive pressure drop. Working ports P, A, and B are rated for 280 bar, which provides a safety margin for typical mobile and industrial systems. Pilot oil is supplied through external port X, and it returns internally to tank via port T to simplify piping. Achieving the shortest switching time requires a pilot flow of 35 l/min, keeping actuator response consistent. Hydraulic fluid must meet ISO 4406 (c) 20/18/15 cleanliness to protect internal lands and seals, and a concealed N9 manual override permits local shifting during electrical outages.
The pilot stage tolerates pressures up to 210 bar and remains controllable down to 10.5 bar when the spring-centered spool is fed externally, giving designers a wide operating window. Tank port T may see 250 bar, so back-pressure in return lines will not force premature leakage. Each switching event displaces 7.64 cm³ of pilot oil, information needed for sizing accumulators in fail-safe circuits. Mechanical fastening uses six M12 × 60 screws tightened to 100 Nm within ±10 percent to seat the valve on its ISO 4401-08-08-0-05 sub-plate without distortion. The mean time to dangerous failure is calculated at 100 years, supporting high availability targets in automated machinery. These parameters complete the mounting, pressure, and reliability data required for proper application of the valve.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Manual Override
Concealed (N9)
Max Flow At 210 Bar (spool G)
250 l/min
Max Operating Pressure (p/a/b)
280 bar
Max Pilot Pressure
210 bar
Max Tank Port Pressure (t)
250 bar
Min Pilot Pressure (x Ext., Spring-centered)
10.5 bar
Mounting Screw Torque
100 Nm (±10%)
Mounting Screws
6 × M12 × 60
Mttfd (type Weh)
100 years
Pilot Flow For Shortest Switching Time
35 l/min
Pilot Return
T Internal
Pilot Supply
X External
Pilot Volume Per Switch (3-pos)
7.64 cm³
Porting Pattern
ISO 4401-08-08-0-05
Solenoid Voltage
110 V AC (50/60 Hz)
1620 Old Apex Road
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