The NEGATIVE pressure [in feet (meters) of water or inches (centimeters) of mercury vacuum] on the suction side of the pump. The pressure can be measured from the centerline of the pump DOWN TO (lift) the elevation of the hydraulic grade line on the suction side of the pump.
SUCTION LIFT
Meaning of SUCTION LIFT in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012