A. The valve gear is the same as that of the 9-1/2 or 11 inch
compressor, only that a piston valve is used to distribute the steam
instead of a slide valve.
55. Q. Where does the steam come from that is used in the high pressure
steam cylinder?
A. Direct from the boiler.
56. Q. Where does the steam come from that is used in the low pressure
steam cylinder?
A. The steam after doing work in the high pressure steam cylinder is
exhausted into the low pressure steam cylinder, where it becomes the
working pressure of this cylinder.