4WRKE16W6-125L-3X/6EG24K31/A1D3M

The 4WRKE16W6-125L-3X/6EG24K31/A1D3M directional valve belongs to the 4WRKE Directional Valves series and is manufactured by Bosch Rexroth for hydraulic automation where proportional control is required. With a nominal size of 16, the housing fits manifold interfaces common to medium-flow systems. The valve passes up to 125 L/min at a differential pressure of 10 bar, allowing fast actuator motion without overshooting circuit limits. Ports p, a, and b withstand working pressures as high as 350 bar, so it can be tied directly to high-pressure pump lines. Pilot oil is supplied externally, and the internal spool shifts through a pilot oil flow of 8.5 L/min when driven from 0 to 100 percent, permitting smooth staging of flow. The external pilot drain is rated for 250 bar, preventing back-pressure from feeding into the pilot gallery. Integrated electronics draw 24 V DC at up to 72 W, giving the amplifier adequate headroom for precise spool positioning.

Closed-loop control is executed with a ±10 V command signal, and the same ±10 V range is returned as an actual value output to confirm spool position for the machine controller. Electrical connection is made through a DIN EN 175201-804 plug, simplifying cable selection in multi-axis installations. Pilot oil returns to tank through an external drain, which helps keep the main valve body free of contamination-laden backflow. A ZDR 6 DP0-4X/40YM-W80 pressure-reducing valve is integrated to stabilize pilot pressure so that spool movement remains steady under fluctuating supply conditions. NBR seals are fitted to resist common mineral hydraulic fluids while maintaining tightness across temperature swings. The enclosure carries an IP65 rating, meaning it blocks dust ingress and withstands low-pressure water jets when the connector is properly installed. The assembled unit weighs 11.2 kg, light enough for single-person handling yet substantial enough to damp vibration on mounting plates.