Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 190
thelift and the force-pump may be understood;while the former raises the liquid above itspiston from which it flows under no pressure,the latter forces it out of the barrel undera varying pressure which depends upon cir-cumstances. When the piston rises the suc-tion valve opens, and the valve in… … 192 Pumps and Hydratilics. In Fig. i6o is shown an air-chamber attached to a force-pump for the purpose of preventing shocks in the discharge,and for producing a steady flow ; air-chambers are also fre-quently attached to suction pipes for a similar purpose. According to the underlying principles…
Hydraulic machinery · Pumping machinery
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