H-4WEH25HD42-6X/OF6EG24N9S2K4/B10V

***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 H-4WEH25HD42-6X/OF6EG24N9S2K4/B10V (R901229245) is a highly sophisticated electrohydraulic directional valve designed for subplate mounting with porting patterns that conform to ISO standards. This model features a 4-way configuration and offers both spring or pressure centering, as well as spring end position or hydraulic end position options. The main control spool of the valve is maintained in the zero position through pressure centering, ensuring reliable operation even when pilot pressure is not present. The valve's actuation can be either internal or external pilot control, with wet-pin DC or AC solenoids that can be selected based on application needs. For ease of integration, it provides electrical connections that can be individualized or centralized according to user preferences. Additional optional versions of this model include manual override capabilities, switching time adjustments, a preload valve in channel P of the main valve, stroke setting, and spool position monitoring for enhanced control and customization. In terms of pilot oil supply and return, the H-4WEH25HD42-6X/OF6EG24N9S2K4/B10V offers flexibility with both external and internal implementations. The external pilot oil supply is channeled through port X from a separate pressure source, while the return can be externally routed via channel Y into the tank. For internal configurations (types HWEHE and HWEH...ET...), the supply comes from channel P of the main valve and returns internally through channel T. It is important to note that this model uses a throttle insert when it's necessary to limit pilot oil flow in channel P of the pilot control valve. Any modifications related to the pilot oil supply must be carried out by authorized specialists or at the factory to ensure safety and proper functioning. The maximum admissible operating parameters are outlined in the datasheet, with specific instructions for maintaining minimum and maximum pilot pressures to avoid excessively high-pressure peaks. Overall, this Bosch Rexroth directional valve stands out for its robust design ensuring durability even with inherent internal leakage over its lifecycle, versatility in applications due to various actuation types offered, and precision control facilitated by its advanced features.