H-4WEH52HG5XF/10CW110N9DAL

The H-4WEH52HG5XF/10CW110N9DAL valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and is intended to route flow in automated hydraulic circuits. It uses electro-hydraulic actuation to convert an electrical pilot signal into precise spool movement, and the internal spool provides a 4-way function to direct pressure and tank lines to two work ports. The design tolerates operating pressures up to 350 bar, enabling service in high-pressure mobile or industrial equipment. It mounts on a subplate interface so the body can be replaced without disturbing pipework, and its porting follows the ISO 4401 pattern for interchangeability with standard manifolds. Spool centering force is supplied by a hydraulic return, eliminating external springs and keeping movement balanced under varying flow rates.

A concealed N9 manual override allows technicians to shift the spool during commissioning or power loss without exposing moving parts to contamination. The pilot return line Y withstands back pressure up to 160 bar, which supports remote tank routing when manifold space is limited. Compatible fluids can have viscosities between 2.8 and 500 mm²/s, giving the unit flexibility across common hydraulic oil grades. External surfaces are protected by a coating up to 100 µm thick to resist corrosion in damp environments. The required fluid cleanliness is ISO 4406 20/18/15 to limit wear on the precision spool lands, and an MTTFd of 100 years supports use in safety-related machinery with long service intervals.