Upon a change in speed of the turbine shaft, the sleeve of centrifugal governor 1 moves upward or downward, shifting the spools of valves 8 and 9 by means of levers 2, 3, 4, 5, 6 and 7. This delivers hydraulic fluid to the corresponding ends of servomotors 10 and 11. The servomotors shift valve members 12 and 13, which regulate steam supply to the first and second stages of the turbine. The same occurs upon the operation of regulator 14 whose piston is in a position determined by the back-pressure. Extraction regulator 15 operates valve member 13, which supplies live steam.
$4234$CHP,Rg$