CLA-VAL CHA : Control Hydraulic Actuator
The CHA hydraulic actuator allows commuting between two set-points of a CLA-VAL hydraulic pilot on which it is assembled.
When a command pressure is supplied to the top chamber of the CHA, the pressure pushes the stem (5), which commutes the pilot from one set point to the other.
The command pressure can be supplied
hydraulically or by air.