SEAFLO 24V 1100GPH 13B Electronic Sensing Automatic Bilge Pump

Automatic periodic water detection for 24V bilges

The SEAFLO SFBP2-G1100-13B is a 24V DC, 1100 GPH electronic-sensing automatic bilge pump. Instead of using a separate float, it briefly turns the impeller approximately every 2.5 minutes; resistance from water makes it continue pumping until the bilge is drained.

It suits yachts, motorboats, fishing craft and workboats where compact automatic pumping is required and the periodic sensing method is appropriate for the electrical system.

Electronic sensing and service features

• No separate float switch required for normal automatic operation.
• Checks for water approximately every 2.5 minutes by running for about half a second.
• Continues pumping when water resistance is detected, then returns to monitoring.
• Quick-connect cartridge design allows motor removal without disturbing base or plumbing.
• Check valve helps reduce discharge backflow.
• Submersible and ignition-protected with stainless-steel shaft, sealed tinned wiring and anti-airlock housing.
• Removable straight discharge fitting and modular replacement motor.
• Designed to meet CE, RoHS, ISO 8846 and ISO 8849 requirements.

Technical specification

Boat compatibility and installation checks

• For 24V DC vessels only; the periodic sensing cycle creates a small recurring electrical demand even when the bilge is dry.
• 1100 GPH is the nominal open-flow rating. Lift, hose length, bore and restrictions reduce installed output.
• Confirm the supplied 19/29 mm discharge fitting before replacing another pump or ordering hose.
• Use a correctly sized fuse and marine cable, and keep the strainer accessible for cleaning.
• Periodic impeller sensing differs from a 14A water-level sensor and from a mechanical float switch; choose the control method deliberately.
• Not suitable for fuel, oil, sewage, drinking water or abrasive liquids.
• Package: one 13B automatic pump with base/check-valve discharge parts. Hose, fuse and main wiring are separate.

Frequently asked questions

Does it use a float switch?

No. It checks for water electronically by briefly running the impeller at regular intervals.

Will it consume power when the bilge is dry?

Yes. The brief periodic sensing cycle uses a small amount of power.

Can it be used on a 12V boat?

No. This listing is for the 24V model.

Is 1100 GPH the installed flow?

No. Actual performance is lower after vertical lift and hose resistance are included.