Variable flow rates in submersible screw pump

摘要

A new product on the South African market is a flexible and cost-effective type of volumetric pump, where flow rates can be varied according to the depth at which the screw is submerged. The PA Archimedean water screw pump is made by Wamgroup's Italian sister company, Roncuzzi. WAM South Africa general manager Emilie Marchand says, "The flow rate can be modified by adjusting the speed without moving its yield too far from the maximum value, making the PA Archimedean screw pumps suited to applications including wastewater treatment, drainage and irrigation, food packaging and in any general application that requires water to be lifted," she explains.