Questions and answers on pumps and pumping machinery (1912)
Wakeman, William Henry, 1855- [from old catalog] · Chicago, The Joseph G. Branch publishing company · leaf 91
288. Q. What is provided for drawing air out ofthe suction pipe? A. A hand pump, or a steam ejector. 289. Q. Why is it not practicable to draw this airout with the main pump ? A. Because the revolving parts of a centrifugalpump are not an airtight fit in the casing. 80 QUESTIONS AND ANSWERS ON … F«G.-f9 PUMPS AND PUMPING MACHINERY. 81
Pumping machinery
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