When jet valve nozzle 1 is shifted by a change in pressure acting on membrane 2, valve spool 3 is shifted to connect a groove o the spool with cylinder 4 of the servomotor whose piston 8 is moved by the working fluid. Lever 7, turning about fixed axis A, is linked to piston 8 by flexible link 5 an is subject to the action of stretched spring 6. Lever 7 shifts sleeve 9, disconnecting the groove of valve spool 3 from servomotor cylinder 4.
$3909$LHP,Rg$