***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 4WE 6 J6X/EG24N9DK25/B12/62 (R978898523) is a high-performance directional control valve designed for controlling the start, stop, and direction of flow in hydraulic systems. This solenoid-operated directional spool valve is part of the WE series and features two switching positions, two electromagnets, and no spring return or detent in its default state. The valve housing contains the electromagnets, control spool, and return springs which are central to its operation. Upon energizing an electromagnet, the control spool shifts from its neutral position to an active state allowing fluid to flow in the desired direction. Once de-energized, the spool returns to its initial position except in valves with a detent (OF) or without spring type (O), where it remains fixed until actively shifted. The valve also offers manual actuation for scenarios where electromagnetic control isn't feasible. Designed with versatility in mind, it adheres to ISO porting pattern standards and can be fitted with or without a locating hole. It boasts a high-power solenoid that can be optionally rotated by 90 degrees for flexible installation and offers electrical connections as either single or central connections. For additional operational monitoring, spool position indicators are available as an option. This model ensures energy efficiency through soft switching behavior that reduces switching strokes and acceleration values during operation—a feature that enhances system longevity by minimizing wear. However, users should note that pressure peaks might inadvertently shift the control spool when using versions with detent unless separate return lines are used or check valves installed. The 4WE 6 J6X/EG24N9DK25/B12/62 is also equipped for safety compliance with CE conformity for electrical voltages above certain thresholds and optional solenoid coil certification (UR marking according to UL). For added reliability in different geographical markets, approval according to CSA C22.2 No. 0-M91 is also available optionally. Users should consider the use of throttle inserts when operating conditions exceed the performance limit of the valve during switching processes.