H-4WEH 25 J6X/6EW110N9ETDA/B10D3

***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-4WEH 25 J6X/6EW110N9ETDA/B10D3 (R901428570) is a high-performance electrohydraulic directional control valve designed for subplate mounting with a porting pattern according to ISO standards. This model features a 4-way configuration and is equipped with wet-pin DC or AC solenoids, which can be optionally connected individually or centrally. The valve offers various types of actuation including internal or external pilot control. The H-4WEH series valves are known for their reliability and versatility, providing spring or pressure centering and the option for spring end position or hydraulic end position. This specific valve has a pressure centering feature that maintains the main control spool in the zero position by pressurizing both front faces. When one side is relieved, the spool shifts to engage the desired flow path, while the pilot oil from the unloaded side is discharged externally via channel Y through the pilot control valve. This model also allows for customization with optional features such as manual override, switching time adjustment, preload valve in channel P of the main valve, stroke setting, and spool position monitoring. These options enhance operational flexibility and allow for precise control tailored to specific application requirements. For pilot oil supply and return configurations, this version (ET) implements internal supply from channel P of the main valve with an internal return via channel T into the tank. It's important to use a throttle insert if there's a need to limit pilot oil supply in channel P of the pilot control valve. Adjustments to the pilot oil supply should only be carried out by authorized specialists or at the factory to ensure proper operation and safety. The Bosch Rexroth H-4WEH 25 J6X/6EW110N9ETDA/B10D3 directional control valve stands out for its robust design which includes return springs that hold the main control spool in central position without pilot pressure even in vertical installations. However, users should note that internal leakage is inherent to these valves and may increase throughout their lifecycle.