Rule 3700 G.P.H. Bilge Pump Non Automatic 12V

The Rule 3700 G.P.H. Bilge Pump Non Automatic 12V is a workhorse for anglers and boaters who demand reliable water removal when they need it most. Built for both commercial and pleasure vessels, this manual bilge pump delivers 3700 gallons per hour of pumping capacity—enough to handle serious bilge accumulation during extended time on the water. When galley leaks, transom seepage, or rain pooling threatens your boat's integrity, a dependable bilge pump isn't optional; it's essential insurance.

This pump features heavy-duty construction engineered for trouble-free operation in demanding marine environments. The fully submersible design means it can operate safely whether mounted in the bilge or partially submerged, and the 1-1/2-inch (38mm) discharge outlet accepts standard bilge hose for seamless installation. The easy-clean snap-lock strainer prevents debris and sediment from clogging the impeller, a critical feature when pumping bilge water that often contains silt and organic matter. Operating at 12 volts DC, it integrates directly into your boat's electrical system and draws modest current for extended-duty applications.

Manual operation gives you complete control—ideal for cruisers and fishing boats where you want to monitor water ingress without automatic cycles running unnecessarily. This pump suits backup bilge duty on larger vessels already equipped with automatic systems, or primary duty on smaller craft where manual activation is practical. Installation requires 12V DC power and a discharge line routed through the hull; the compact 8 x 7 x 11-inch footprint fits most engine compartments and bilge spaces. Anglers and boaters who value reliability and proven performance choose Rule's reputation for longevity and field-tested durability.