Bosch Rexroth | 4WEH16G7X6EW110N9DA
4WEH16G7X/6EW110N9DA
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The 4WEH16G7X/6EW110N9DA directional control valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for hydraulic automation tasks that require dependable flow direction. Its NG16 size matches subplates of that nominal passage, and the 4-way layout provides P, T, A, and B ports for bidirectional actuator service. A porting pattern of ISO 4401-07-07-0-05 standardizes the mounting footprint. The body sustains 280 bar at ports P, A, and B, and carries up to 210 l/min at that pressure when equipped with spool symbol G. Pilot oil is supplied through the external X port and returns through the external Y port to keep pilot flow separate from the main circuit. A spring-centered spool needs at least 14 bar pilot pressure to shift and tolerates up to 250 bar in the pilot gallery. A concealed manual override designated N9 allows local actuation when electrical power is unavailable.
Electrical connection through a DIN EN 175301-803 plug powers the pilot solenoid, provides a standardized pin layout, and maintains gasket sealing. The hydraulic fluid must meet ISO 4406 cleanliness code 20/18/15 to prevent spool wear. When an external drain is used, port T handles 250 bar, permitting operation with elevated back-pressure. Installation relies on four M10 × 60 socket head screws; each bolt is tightened to 58 Nm to secure the valve and preserve the seal line. The mean time to dangerous failure is 100 years, offering long statistical service life in safety-related equipment.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Electrical Connector
DIN EN 175301-803
Manual Override
Concealed (N9)
Max Flow (symbol G, 280 Bar)
210 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pressure Port T (y External)
250 bar
Min Pilot Pressure (3-pos, Spring-centered)
14 bar
Mounting Bolt Quantity (m10)
4
Mounting Screw Size
M10 x 60
Mounting Torque (m10)
58 Nm
Mttfd
100 Years
Pilot Oil Supply
External (X), Return External (Y)
Porting Pattern
ISO 4401-07-07-0-05
Size
NG16
Way Configuration
4-Way
1620 Old Apex Road
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