This bronze body,self-priming impeller pump will produce a dry prime suction lift of about 6' and has a maximum head of 20'. 9 GPM rating. Use for bilge pumping,livewell circulation,wasHDown,and general pumping applications. Cannot be run dry. Permanent magnet type motor is fully enclosed with a stainless steel shaft and has adequate torque to reverse the pump. Complies with USCG Electrical Standards 183.410 and ISO 8846 marine for ignition protection on gasoline powered vessels. Ports: 1/2" internal pipe threads,1" external hose barb & 3/4" external garden hose adapter.