Rule 3700 G.P.H. "Gold Series" Bilge Pump

The Rule 3700 G.P.H. "Gold Series" Bilge Pump is the workhorse that serious boaters and commercial operators trust to keep water out of their hull. Whether you're running a fishing charter, cruising coastal waters, or maintaining a pleasure vessel, this submersible pump delivers the high-capacity performance needed when water intrusion becomes an emergency. At 3,700 gallons per hour, it handles everything from minor seepage to active flooding with equal reliability.

Built for heavy-duty marine service, the Rule 3700 combines fully submersible construction with a 12-volt DC motor rated for continuous operation in saltwater and freshwater environments. The 1-1/2" discharge outlet ensures maximum flow rate and minimal pressure loss, while the snap-lock strainer design makes maintenance simple—no tools required to access and clean debris that might clog the intake. The Gold Series designation reflects Rule's reputation for trouble-free engineering, with a sealed motor that resists corrosion and a robust impeller designed to handle sediment and marine growth without cavitation or failure.

This pump excels in bilge protection systems where automatic float switches trigger activation before water becomes visible in the cabin. Commercial fishing boats, cabin cruisers, and offshore platforms depend on Rule's Gold Series for backup capacity when primary systems are overwhelmed. Installation is straightforward: mount the unit in your lowest bilge compartment, connect the discharge hose to a through-hull fitting, and wire to a 12V battery with appropriate fusing. The compact 8 x 7 x 11-inch footprint fits most engine compartments, and the 6.05-pound weight won't stress your mounting structure or electrical system.