Rule 500 GPH 25SA Electronic Sensing Bilge Pump-500

Overview

Introducing the next generation of Rule sensing bilge pumps: the 500 GPH S-Series pump. This pump works on the principle of impeller resistance, turning on every 2-1/2 minutes for about one second to sense for water. If water is present, the pump will sense resistance and continue to run until all water is removed. After that, it will resume checking for water every 2-1/2 minutes, keeping water levels between 1/8 and 3/8.

This improved design and performance means that our new 500 GPH pump will produce this flow at just 12 volts rather than 13.6 volts as previously required, more typical of on board voltage supply. Our next generation of Rule pumps include check valves and a hidden air vent to prevent airlocking. Under each strainer tab there is a small hole that vents any air trapped in the pump housing preventing airlocks.

The 500 GPH S-Series pump is completely automatic with manual override, submersible and ignition protected, and features a high efficiency, low amp motor with a stainless-steel shaft. It also includes a backflow preventer and true electromagnetic suppression (EMC) with a built-in thermal cell that protects the pump and the vessel when things get too hot. These are the smallest automatic pumps on the market.

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