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 Response @ -90 degrees = 200 to 300 Hz
Caterpillar Hydraulic
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 Response @ -90 degrees = 200 to 300 Hz