A catechism of the steam engine in its various applications to mines, mills, steam navigation, railways, and agriculture. With practical instructions for the manufacture and management of engines of every class (1864)
Bourne, John · New York, D. Appleton & co. · leaf 281
d that of the valveseat are held together by a union joint. It is sometimes formedwith a thread at the under end, and screwed into the pipe. Theballs are cast hollow to lessen the shock, as well as to save themetal. In some cases where the feed pump plunger has beenattached to the cross head, the… … FEED WATER SHOULD BE ADMITTED LOW DOWN. 265 523. Q.—Are none but ball valves used in the feed pump ?A.—Spindle valves have in some cases been used instead of ball valves, but they are more subject to derangement; but pis-ton valves, so contrived as to shut a portion of water in thecage when about…
Steam engineering · Steam-engines
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