4WRL16EZ180S-3X/G24ETZ4/M-750

The 4WRL16EZ180S-3X/G24ETZ4/M-750 valve is manufactured by Bosch Rexroth for the 4WRL Solenoid Valves series. Designed for hydraulic automation, it modulates flow and direction in pressure lines. The valve is built to nominal size 16, which establishes port dimensions for medium flow circuits. It passes up to 450 l/min, so manifolds can support high cylinder speeds. Allowable pressure at ports P, A, and B reaches 350 bar while ports T, X, and Y tolerate 250 bar, enabling operation in high-pressure systems. Internal pilot oil supply and internal pilot oil return simplify plumbing because no external lines are required. The pilot stage delivers 12 l/min and transitions the spool over its full stroke within 40 ms, supporting responsive control loops. A minimum control oil pressure of 10 bar is required to move the main stage, and the electromagnetic actuator is energized with a 24 V DC supply through a DIN 43560-AM2 connector.

Degree of protection IP65 keeps the electrical enclosure sealed against dust ingress and low-pressure water jets during routine cleaning. An NBR seal set contains the hydraulic fluid and resists wear from mineral oils, extending service intervals. Hysteresis is limited to 0.1 %, so the spool returns to the commanded position with minimal deviation, which supports accurate overlap control. Main stage leakage is capped at 600 cm³ per minute, reducing unwanted heat generation and easing demands on the tank circuit. The 10 kg mass remains light enough for a single technician to install the unit on a subplate without lifting equipment. Because leakage and hysteresis are tightly specified, the valve maintains predictable performance throughout proportional shifts. This enclosure rating, combined with these seals, keeps the internal solenoid and pilot passages protected in harsh industrial environments where pressurized spray, debris, and vibration are common.