Bearing design and trouble-free operation are evident in these screw pumps. The built-in variable capacity automatically adjusts the pumping rate and power consumption while operating at a constant speed to match the incoming flow. The pumps have a high rate of acceptance for their ability to lift water efficiently at any stage of the treatment process. They are used in a variety of applications including wastewater plant lift stations, return activated sludge, storm water pumping, land drainage and industrial applications.