Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 209
FiQ. 182. … Fig. 183. Pump Parts. 211 The stcatn lud of the ordinary single steam pump, and alsoof the duplex pump, differs froin the steam eylinder of the steamengine in that the former has four ports to each eylinder, i. e.,tivo steam ports and tzvo cushioning ports as shown hereafter infigures. Under the…
Hydraulic machinery · Pumping machinery
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