DIRECTIONAL SPOOL VALVE H-4WEH25K6X/6EW110N9ETK4/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-4WEH25K6X/6EW110N9ETK4/B10D3 (R900972970) is an industrial hydraulic valve designed for high-performance applications, featuring reliable switching of oil flow direction in accordance with its hydraulic symbol K. This spool valve is pilot-operated, with internal pilot oil supply and return, ensuring efficient control of the system. The model has a maximum pressure capacity and comes with an electrical connection that includes a connector pole PE conforming to EN standards. This valve boasts several noteworthy capabilities including its solenoid actuation type, which provides precise control over the hydraulic functions. It is designed for subplate mounting and follows the connection diagrams of NFPA T3.5.1 R2-2002 D03 and ISO 4401 Size 6 CETOP R35H. The product operates on a supply voltage of 110 VAC and features a number of switching positions to accommodate various operational requirements. The valve's construction includes NBR seals compatible with hydraulic fluids such as HL, HLP, HLPD, HVLP, HVLPD, and HFC. Its conformity with CE standards and CSA approval according to CSA C22.2 No. 0 ensures that it meets rigorous safety and quality benchmarks. In terms of design specifics, the valve includes return springs that maintain the main control spool in a central position without pilot pressure even when vertically positioned; however, due to its design principle, some internal leakage may occur over time. The main control spool is pressure-centered for reliable operation. Additional features include external or internal options for pilot oil supply and return based on the specific type designation (ET or E), throttle insert usage for controlling pilot oil supply flow rate, and various actuation types like electrohydraulic WEH suitable for subplate mounting. The Bosch Rexroth H-4WEH25K6X/6EW110N9ETK4/B10D3 offers customization through optional manual override, switching time adjustment mechanisms, preload valves in channel P of the main valve, stroke setting adjustments or spool position monitoring—tailoring its use to specific application needs while maintaining robust performance characteristics essential for demanding hydraulic systems.