New Old Stock Rexroth Directional Control Valve Linear p/n 4WE10H11/LG12N/5. We found these in an inventory we purchased. Control Valve does look to be unused and in good condition. We believe that these control valves are solenoid operated directional spool valves. They control the start, stop, and direction of a flow. These directional valves basically consist of housing; one or two solenoids; control spool.