Marketing InformationRugged and dependable heavy-duty cast iron pump with powder coat finish. Liberty Pumps "workhorse" sump pump features a unique 1-piece cast iron body, quick-connect power cord and 3 different switch options, including our vertical magnetic float (VMF) design for smaller pits (model 257). With a durable epoxy powder coat finish and vortex-style impeller, Liberty Pumps 250 Series pump is the perfect choice for low head effluent pumping or basement dewatering.