WEH Directional Spool Valves

The Bosch Rexroth type WEH are high-performance directional spool valves, designed as pilot-operated units with electro-hydraulic actuation. These subplate-mounted valves are available in 4/3, 4/2, or 3/2-way versions and can handle a maximum operating pressure of 350 bar and flows up to 1100 l/min. Their fundamental function is to control the starting, stopping, and directional path of fluid flow within a hydraulic circuit. The valve works by using a small, electro-hydraulically actuated pilot control valve to direct fluid, which then creates a pilot pressure to shift the larger main control spool. The series features options for spool returns, including spring or hydraulic end position, and offers optional features like switching time adjustment and spool position monitoring.