Jabsco 18670-9407 Mastercraft Ballast Pump This ballast pump from Jabsco is a reversible pump, meaning that it can both fill and empty your ballast tank. This pump can add approximately 80 pounds of ballast water every minute, with a flow rate of 9 GPM. It is self priming up to 3 ft. This pump acts in accordance with USCG 183.410 and ISO 8846 Marine ignition protection. Engineered with a bronze pump head and oil-resistant nitrile impeller for a long lasting life in marine environments. This high