Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 210
e 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 division of the work allotted to the SteamPump will be found all… … Fig. 1S4. The valves shown in Fig. i8i are carried by two plates ordecks, the suction valves being attached to the lower plate andthe delivery valves to the upper one. The upper deck, andsometimes both decks, are removable. The valves are securedto the plates by means of bolts or long machine…
Hydraulic machinery · Pumping machinery
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