Water and Wastewater Terms Beginning S

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

suction head

The positive pressure in feet (meters) of water or pounds per square inch (kilograms per square centimeter) of mercury vacuum on the suction side of a pump. The pressure can be measured from the centerline of the pump up to the elevation of the hydraulic grade line on the suction side of the pump.