General Pump Manufacturing's enclosed impeller L-series of industrial submersibles offer capacities ranging from 40 gpm to 1,500 gpm. Designed for greater head capabilities, greater efficiency and deeper settings, applications include water supply for the home or farm, municipalities, irrigation, mine dewatering, fire protection for offshore platforms, factories and many others. Component materials include bronze, class 40 cast iron, stainless steel and ductile iron. General Pump Manufacturing Inc.