Rule Non-Automatic 4000 GPH Bilge Pump 56D Designed for the toughest applications, the 4000 GPH 15140 LPH pump optimizes Rules exclusive design features to produce the highest capacity available for a pump its size. Rule bilge pumps are the first choice of yachtsmen and fishermen throughout the world. Featuring a compact and efficient long life motor, this pump is able to run dry for short periods and is easy to clean thanks to the snap-lock strainer base. This bilge pump features back flow prev