Taking the reputation of the Bowie 300 Series, the Bowie 300 Extended Duty (ED) Series takes 300 Series performance and extends pump life. By adding ductile iron heavy duty wear plates, increasing shaft diameter to 1 ¼” (32 mm) and extended bushing length to a full 3 ½” (89mm), the Bowie 300 ED Series provides longer life under heavy wear conditions. At the same time, you get the ease of maintenance and serviceability as the original 300 Series pumps. It’s affordable – it’s tough – it gets your job done and keeps you on the road.