Servo Valve always has a Sleeve and Spool in Main Stage Servo Torque Motor and Orifices Control Pressure Balance to Position Main Spool Small Signal…

4WRVE higher dynamics – Pilot 4WRREH 6 – Main Stage Same as 4WRL 12-pin Elec. Connector No Failsafe Position (Center main spool with Z4WE6 under…

4WRREH 6: Push-pull, servo solenoid for faster response than 4WRPEH 6 – 250 Hz @ -90 deg, small signal – Nearly as fast as 4WS2EM6…

Nominal Flow (Size 10 to 35) – 50 to 1100 LPM @ 10 bar or 145 psi ?p, like a Proportional Main stage has LVDT…

V-Spool with Linear flow characteristic can improve system performance Higher P-gain in controller reduces following error Easier tuning of close loop application

Main stage has proportional spool in cast housing Pilot stage has sleeve/spool (4WRPEH) Nominal Flow rated at 10 bar ?p for pilot operated Servo Solenoid…

Protect each OBE with 2.5 Amp, Fast acting Fuse!  

Smooth cross-over (through center) like Servo, important to Most Reliable OBE Available 25g mechanical shock and vibration for 24 hours in 3 Axis Long Service…

Zero overlap matched spool and sleeve Failsafe position with overlap, by spring offset during power off / fault), which may eliminate need for an external…