4WE 6 Q6B6X/EW110N9K4

***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 Q6B6X/EW110N9K4 (R900922473) is a high-performance directional control valve designed for managing the flow direction in hydraulic systems. This model features two solenoid-operated spool valves that can control the start, stop, and direction of flow with precision. The valve housing contains one or two electromagnets, a control spool, and return springs that maintain the spool's position when de-energized, except for versions without a spring return. The electromagnets facilitate movement of the control spool from its rest position to an active state when energized, allowing for the manipulation of fluid flow according to the selected symbol. Once the electromagnet is de-energized, the control spool returns to its initial position by action of the return springs unless it is a version with a detent (OF) or without spring type O. This particular model has an auxiliary actuation feature enabling manual operation without power supply to the magnets. It also emphasizes energy efficiency by offering versions with detents that fix the control spool in place during operation, eliminating continuous power requirements. The valve is designed to conform with ISO porting patterns and offers options such as high-power solenoids which can be rotated by 90 degrees for flexible installation. Electrical connections can be made either individually or via central connection points. Additional features include optional spool position monitoring and CE conformity for electrical safety standards above certain voltage thresholds. Solenoid coils come with UR marking per UL standards edition or CSA approval as optional specifications. It's important to note that proper venting of the hydraulic system is necessary for optimal performance, and users must consider potential internal leakage over time due to design principles. The use of a throttle insert may be required under certain operating conditions to prevent flows exceeding valve capacity during switching processes.