Self-priming design meaning the pump will reprime itself after the first manual prime;Fully serviceable Back pull-out design makes it easy to replace;Two-compartment motor for easy access to wiring ;FDA compliant impeller for ease of mind;Strong and durable cast iron casing for physical longevity ;Corrosion resistant to extend the life of the product;Powered for continuous operation without causing motor damage;1-1/2" NPT suction and discharge connections for easy plumbing