Bosch Rexroth | 4WEH16E7X6EG24N9DAL10B10-CSA
4WEH16E7X/6EG24N9DAL/10B10 CSA
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The 4WEH16E7X/6EG24N9DAL/10B10 CSA valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth. It directs hydraulic flow in automated circuits through an electrically piloted spool that shifts under pressure. The unit is built to nominal size 16 for use with medium-capacity manifolds, and it matches subplates through the ISO 4401-07-07-0-05 porting pattern. The pilot coil requires a 24 V DC supply, which aligns with typical machine control voltages. Ports P, A, and B may be loaded to 280 bar, while flow rates can reach 300 l/min to serve large cylinders and motors. Internal piloting becomes effective at 4.5 bar, pilot channels may be pressurized up to 250 bar, and a three-position spring-center assembly needs at least 14 bar to shift fully.
Hydraulic fluid introduced to the valve must achieve an ISO 4406 cleanliness code of 20/18/15 to prevent spool wear. Viscosity is permitted between 2.8 mm²/s and 500 mm²/s so the spool can travel freely under both hot and cold conditions. Ambient air around the assembly may vary from −20 °C to 50 °C without derating, and fluid temperature is allowed in the −20 °C to 80 °C range to protect seals and pilot passages. Back pressure at port Y is limited to 210 bar when the valve is driven with direct current solenoids, ensuring that pilot flow can exhaust correctly under high system loads.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Coil Voltage (pilot)
24 V DC
Max Ambient Temperature
50 C
Max Fluid Temperature
80 C
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Max Y Pressure (dc)
210 bar
Maximum Flow
300 l/min
Maximum Viscosity
500 mm2/s
Min Ambient Temperature
-20 C
Min Fluid Temperature
-20 C
Min Internal Pilot Pressure
4.5 bar
Min Pilot Pressure (3-pos Spring)
14 bar
Minimum Viscosity
2.8 mm2/s
Porting Pattern
ISO 4401-07-07-0-05
Size (ng)
16
1620 Old Apex Road
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