Bosch Rexroth | 4WRZ16EB150-7X6EG24N9EK4D3M
4WRZ16EB150-7X/6EG24N9EK4/D3M
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The 4WRZ16EB150-7X/6EG24N9EK4/D3M proportional directional valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and regulates flow and direction in hydraulic automation loops. It mounts on an ISO 4401-07-06-0-94 interface, and the size 16 subplate brings the installed mass to 13.4 kg for stable manifold placement. Each P, T, A, and B port measures 20 mm, supporting a nominal flow of 150 l/min at a 10 bar pressure drop. The main stage withstands 350 bar, letting the unit handle high-pressure work circuits. Pilot oil is supplied internally, while the drain is routed externally through port Y to isolate control oil from tank pressure. A protection class of IP65 keeps moisture and dust away from the solenoid housing, and the plug-in coil uses a DIN EN 175301-803 connector for straightforward wiring and service access.
The concealed N9 manual override lets technicians shift the spool without energizing the solenoid, maintaining enclosure integrity when test strokes are required. Coil drive is limited to 1.5 A, and the winding insulation endures temperatures up to 150 °C to prevent thermal damage during continuous duty. Return port t can accept up to 250 bar, while pilot drain pressure is restricted to 30 bar so back-pressure does not disturb meter-in accuracy. A ZDR 6 DP0-4X/40YM-W80 pressure-reducing valve stabilizes pilot pressure for consistent proportional control. The hydraulic system must use mineral oil types HL or HLP conforming to DIN 51524 to match seal materials and orifice design. These characteristics combine to deliver predictable flow control under demanding industrial cycle rates.
Technical Specifications
Degree Of Protection
IP65
Electrical Connection
DIN EN 175301-803
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Manual Override
Concealed (N9)
Max Coil Current
1.5 A
Max Coil Temperature
150 °C
Max Operating Pressure (main)
350 bar
Max Pilot Drain Pressure (y)
30 bar
Max Return Port Pressure (t)
250 bar
Mounting Interface
ISO 4401-07-06-0-94
Nominal Flow (Δp=10 Bar)
150 l/min
Pilot Oil Drain
External (Y)
Pilot Oil Supply
Internal (E)
Pilot Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Port Diameter (a, B, P, T)
20 mm
Weight (subplate, Size 16)
13.4 kg
1620 Old Apex Road
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