Questions and answers on pumps and pumping machinery (1912)
Wakeman, William Henry, 1855- [from old catalog] · Chicago, The Joseph G. Branch publishing company · leaf 109
Fi<b.59 348. Q. Why are the air cylinders larger than thesteam cylinders? A. Because steam at high pressure is used, while 98 QUESTIONS AND ANSWERS ON air, or other gases and fumes, are transferred at lowpressure and large volume. They are fitted withmechanically operated valves. … Fio.60 349. Q. How do these valves differ from ordinarypump valves? A. They are opened and closed by eccentrics on PUMPS AND PUMPING MACHINERY. 09 the crank shaft, therefore the movements are independ-ent of the gases passing through them. They wouldoperate in the same way if no work was done by…
Pumping machinery
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