This is a measure of the movement of air (and extracted
solution, when working) through the vacuum hose.
Lift
The engine or force that is propelling the air and
solution mixture down the hose. Lift is necessary to maintain the CFM. It’s
measured in “Inches of Lift”, using a mercury scale, (sort of like a mercury thermometer) in a
laboratory. Each truck mounted machine has a gauge that shows the equivalent of
this scale.
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