The SM21 is the ideal pump for areas of confined space and small openings. The SM21 pumps up to 300 gym / 1125 lpm at a 50-foot head. The cast iron impeller is within 3/4 of an inch of the base allowing the pump to remove more liquids than other pumps. The SM21 features a lifting eye 2.5 in. NPTF discharge and is furnished with hose whips and flush face quick disconnect couplers. Pump requires no priming and can be run dry.