Questions and answers on pumps and pumping machinery (1912)
Wakeman, William Henry, 1855- [from old catalog] · Chicago, The Joseph G. Branch publishing company · leaf 104
PUMPS AND PUMPING MACHINERY. 93 336. Q. What are its disadvantages?A. There are no special disadvantages, except thatit is difficult to maintain steady speed when only a … FiO.56 small quantity of water is to be forced against a highpressure. 337. Q. What causes the varying speed? 94 QUESTIONS AND ANSWERS OX A. On the downward stroke the weight of steamand water pistons, rods, crossheads, etc., assist thesteam pressure, but on the upward stroke this weightacts…
Pumping machinery
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