4WE6U12-6X/EG24K4

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth 4WE6U12-6X/EG24K4 (R900905552) is a high-performance directional control valve designed for managing the start, stop, and direction of flow in hydraulic systems. It is a solenoid-operated directional spool valve that includes a housing, one or two electromagnets, a control spool, and return springs. The valve operates by moving the control spool from its rest position to an actuated position when the electromagnet is energized, thereby allowing fluid to flow according to the selected symbol. This specific model features two switching positions and dual electromagnets without detent, meaning it does not have a defined basic position when de-energized. The absence of spring return on the control spool indicates that there is no automatic return to an initial position after deactivation. However, for versions with detent (OF), the control spool is held in place by detents which can reduce energy consumption as continuous power supply to the magnet is not required. The 4WE6U12-6X/EG24K4 offers an optional auxiliary actuation for manual operation without magnet supply and requires proper venting of the hydraulic system for optimal performance. It is designed with porting patterns according to ISO standards and can be configured with or without locating holes. The high-power solenoid can be rotated if necessary, providing flexibility in installation. Electrical connections are available as single or central connections, with optional spool position monitoring for enhanced operational accuracy. This model also ensures compliance with CE conformity standards for electrical voltages greater than 50 VAC or 120 VDC. Additionally, it features a solenoid coil that carries UR marking according to UL standards (optional) and may include CSA C22.2 approval (optional). Notably, this valve series may experience internal leakage over time due to its design principle. Users should consider separate return lines or installing check valves if using multiple valves due to potential pressure peaks causing unintended control spool movements in versions with detent. A throttle insert may be necessary under certain operating conditions where flow during switching exceeds the valve's performance limit.