4WEH Size 16
General Description
Directional control valves, Model 4WEH, are solenoid pilot-operated spool-type valves. They control the start, stop, and direction of fluid flow in a hydraulic circuit. Over 50 spool types are available. A wide range of operating voltages and dual-frequency solenoid coils are available. Five flow sizes are available along with an optional meter-in or meter-out pilot choke, an optional stroke limiter for the main spool (size 10), and an optional mechanical or inductive limit switch on the main spool position. Standard valves are 4100 PSI. By adding “H” in front of a part number, 5100 PSI can be achieved. Optional sandwich valves are available for mounting between the pilot valve and the main stage to control pilot spool speed and limit pilot pressure. Inserts are available to provide pilot pressure on open center valves. These valves are available with a cover plate instead of a solenoid operator for remotely shifting the main spool by hydraulic pressure. Valves are set up for external piloting and external draining. They can be modified in the field for internal or external piloting or draining by the insertion or removal of plugs in the main body.
Bosch Rexroth 4WEH & 4WH Directional Control Valves