ClipArt ETC
"In the Curtis turbine, steam is admitted through a series of valves, the number of which depends upon the capacity of the machine. The valves are arranged to open successively, two—thirds of them being open at full load. The action of the valves is so regulated that they are either fully open or fully closed. Any increasing load is taken care of by the opening of an additional valve, this valve closing when the load falls off." —Derr, 1911

Sectional View of Governor for Varying Number of Nozzles Opened

"In the Curtis turbine, steam is admitted through a series of valves, the number of which depends upon…

A cross sectional view of Westinghouse Parsons turbine. Steam enters at V and exits at E, turning the turbines, R. The turbines turns the shaft, B, to produce energy to produce electricity. During this process, the steam, at high pressure, is expanded to a lower pressure.

Westinghouse Parsons Turbine Viewed Cross Sectionally

A cross sectional view of Westinghouse Parsons turbine. Steam enters at V and exits at E, turning the…