Bosch Rexroth | 4WRZ16W6-150-7X6EG24N9K4D3M
4WRZ16W6-150-7X/6EG24N9K4/D3M
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The 4WRZ16W6-150-7X/6EG24N9K4/D3M proportional directional valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and governs flow direction and magnitude in hydraulic automation circuits. The nominal size of 16 defines the internal port areas and lets the unit fit into mid-flow manifolds, while a nominal flow of 150 l/min at a 10 bar differential enables actuators to reach rated speed without excessive pressure loss. Spool symbol W6 specifies the flow paths for center, crossover, and end positions so circuit designers can apply predictable motion profiles. The ISO 4401-07-06-0-94 mounting interface aligns the ports with standard subplates, simplifying replacement in existing machines. A pilot valve of size 6 (coded 6E) controls the main stage with low pilot flow for quick response. The 24 V DC supply energizes the proportional solenoids, and a DIN EN 175301-803 plug (K4) provides a quick electrical hookup. A concealed manual override marked N9 allows maintenance staff to shift the spool during commissioning or power loss without exposing the control element.
The main ports withstand 350 bar, permitting the valve to serve cylinders or motors that require elevated force, while port T can return up to 250 bar and port Y is limited to 30 bar to protect the pilot circuit. Mineral oil in the HL or HLP classes is the specified operating fluid, and the seals are NBR, ensuring compatibility with these oils and typical temperature ranges. Maximum hysteresis is held to 6 percent to support repeatable positioning when the command signal varies. A built-in pressure reducing valve type ZDR 6 DP0-4X/40YM-W80 (option D3) keeps the pilot supply at a controlled level so spool movement remains linear. The assembled unit weighs 13.4 kg, a factor to consider when selecting manifold supports and handling equipment.
Technical Specifications
Electrical Connection
DIN EN 175301-803 Plug (K4)
Hydraulic Fluid
Mineral Oil (HL, HLP)
Hysteresis
6% Max
Manual Override
Concealed (N9)
Max Operating Pressure (main)
350 bar
Max Pressure Port Y
30 bar
Max Return Pressure Port T (ext)
250 bar
Mounting Interface
ISO 4401-07-06-0-94
Nominal Flow (Δp=10 Bar)
150 l/min
Nominal Size
16
Pilot Valve Size
6 (6E)
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80 (D3)
Seal Material
NBR (M)
Spool Symbol
W6
Supply Voltage
24 V DC
Valve Weight
13.4 kg
1620 Old Apex Road
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