4WE6L25-6X/EG24N9K4

***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 4WE6L25-6X/EG24N9K4 (R900957915) is a high-performance directional control valve designed for managing the start, stop, and direction of flow in hydraulic systems. This model features a housing, one or two electromagnets, a control spool, and return springs. In its default state, the spool is held in position by these springs except in the version without spring return (type O). Activation of the electromagnet propels the spool from its rest position to an active state, enabling flow in the desired direction as per the symbol selected. Upon de-energization, except for versions with detent (type OF) or without spring (type O), the spool reverts to its initial position. The valve also includes an auxiliary manual actuation feature allowing manual operation without electrical power. Proper venting of the hydraulic system is critical for optimal functioning of this component. The 4WE6L25-6X/EG24N9K4 valve is engineered without a spring return on the control spool for versions with symbols A, C, and D. It offers two switching positions and two electromagnets but lacks a defined rest position when not energized. In contrast, versions with detent ensure that the spool remains fixed in its switched position even when not powered, enhancing energy efficiency as continuous current to the magnet is unnecessary. This model boasts soft switching characteristics that minimize switching strokes and related accelerations by a significant margin compared to standard valves—this aids in smoother transitions during operation. Users should note that pressure peaks might inadvertently shift control spools in detented versions; separate drain lines or check valves are recommended to prevent this. For this specific model code, it's important to consider internal leakage inherent to its design which may increase over time. The 4WE6L25-6X/EG24N9K4 conforms to ISO porting patterns and offers various options such as high-power solenoid rotation capability, single or central electrical connections, optional auxiliary devices for operation, and spool position monitoring features. It meets CE conformity for certain electrical voltage thresholds and has optional UL approval markings per edition standards as well as CSA approval considerations.