Rule Fully-Automatic Bilge Pump - 500 GPH

Rule Fully-Automatic Bilge Pump - 500 GPH Rule's completely submersible, fully-automatic bilge pumps eliminate the need for external float switches. These pumps turn on every 2-1/2 minutes for about one second to sense for water; if water is present the pump will run until all water is removed, then it will return to the sensing mode. Features include easy clean snap-lock strainer bases, silent, vibrationless operation, anti-airlock protection, stainless steel shafts, and no burn-out when run dry. 12VDC.