4WRL16EZ180S-3X/G24Z4/M-750

The 4WRL16EZ180S-3X/G24Z4/M-750 valve belongs to the 4WRL Solenoid Valves series from Bosch Rexroth. It regulates hydraulic flow and pressure in automated circuits that use an internal pilot supply. The unit accepts a 24 V DC supply voltage and connects through a DIN 43560-AM2 plug so control wiring follows standard industrial layouts. Mounting conforms to ISO 4401-07-06-0-94, enabling direct installation on compatible sub-plates without manifold adaptation. A progressive M-type flow characteristic lets the operator achieve fine metering at low command signals yet still reach the maximum flow of 450 l/min when fully actuated. Position feedback is provided by an LVDT DC/DC ±10 V transducer, allowing closed-loop controllers to monitor spool travel. The response time from 0 to 100 percent stroke is 40 ms at a pilot pressure of 100 bar, supporting fast load changes. With a mass of 10 kg, handling is manageable during assembly while still providing the stiffness required for precise actuation.

In operation, ports P, A, and B withstand a maximum pressure of 350 bar, permitting use in high-pressure power units. The pilot circuit functions between 10 and 250 bar; the lower limit of 10 bar ensures stable actuation, and the 250 bar upper limit matches the valve’s maximum pilot pressure rating. Return lines t, X, and Y accommodate up to 250 bar, letting designers route pilot and drain oil without separate low-pressure lines. Internal pilot oil supply, indicated by the x designation, simplifies piping by eliminating an external feed. The integrated pilot stage passes 12 l/min, providing adequate flow to shift the main spool under dynamic conditions. System cleanliness must meet ISO 4406 18/16/13 to maintain spool accuracy and avoid wear. A vibration resistance of 25 g protects the electromagnetic assembly in mobile or press-mounted equipment. These pressure, flow, cleanliness, and durability limits define the valve’s safe working envelope in automated hydraulic machinery.