lift pump

noun
a pump in which a liquid is lifted rather than forced up from below.
Compare force pump.


Origin:
1855–60

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
lift pump
 
n
Compare force pump a pump that raises a fluid to a higher level. It usually consists of a piston and vertical cylinder with flap or ball valves in both piston and cylinder base

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Pumps shall be the vertical lift type or a adaptation of the vertical lift pump.
On the other hand, the plunger in a hydraulic lift pump lifts liquid on the
  upstroke and also on the downstroke.
The inertial-lift pump has no external power requirement.
Pump sprayer aerators are equipped with either an impeller suction pump, an
  impeller lift pump, or a turbine pump.
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