4WRZE16W6-150-7X/6EG24N9EK31/F1M

The 4WRZE16W6-150-7X/6EG24N9EK31/F1M is produced by Bosch Rexroth as part of the WRZ Proportional Directional Valves series and serves to meter flow and direct pressure lines in automated hydraulic circuits. A supply voltage of 24 V DC powers the integrated electronics, while a 4–20 mA command input lets a controller set spool position through a standard analog loop. With a nominal flow of 150 l/min at a 10 bar differential, the unit can move considerable oil volume for medium-to-large actuators. The ISO 4401-07-06-0-94 mounting interface aligns the valve body with common subplates to streamline replacement work. Operating pressure on the main ports can reach 350 bar, allowing use in high-pressure machinery such as presses or die-casting centers. Static hysteresis stays at or below 6 percent, which limits deviation between commanded and actual flow. An ISO 4406 cleanliness class of 20/18/15 is required for the main stage to prevent silt erosion and spool sticking. The assembly weighs 13.6 kg, so lifting points or support brackets are advisable during installation.

A maximum continuous coil draw of 1.8 A, combined with a 3 A pulse current for rapid shifts, defines the load that the drive electronics must supply. Electrical termination is handled by a plug to DIN EN 175201-804, promoting quick service swaps in the field. The hydraulic section is designed for mineral oil types HL or HLP according to DIN 51524, ensuring seal compatibility and predictable viscosity under load. Pilot stages consume 5.5 l/min of oil when stepping from 0 to 100 percent, and a pilot volume of 4.6 cm³ must be filled to traverse the full stroke, data that helps size accumulators in closed-loop systems. Port Y can tolerate 30 bar drain pressure without affecting control accuracy, while port T on an external return line may see up to 250 bar, expanding mounting flexibility in circuits with backpressure. These limits, together with the specified supply and signal values, outline the operating envelope for reliable proportional control.