Rule 500GPH Electronic Sensing Bilge Pump - 12V - 25SA Sierra Marine 4 Stroke Marine Engine Oil power-assisted stern drives

power-assisted stern drives

ISO 8849 Marine Bilge Pump Standard

They feature an ergonomic tear-drop design for comfortable use

Efficient and quiet operation

Universal base plate and a choice of 1-1/2" or 2" ports makes for a simple installation

Rule 500GPH Electronic Sensing Bilge Pump - 12V - 25SA Sierra Marine 4 Stroke Marine Engine Oil power-assisted stern drives500GPH Electronic Sensing Bilge Pump 12V In the next generation sensing bilge pumps, the 500GPH S series pump works on the principle of impeller resistance. The pump will turn 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. Water is kept in check between 1 8" and 3 8"!!!