SEAFLO 12V 12GPM 45LPM Marine Macerator Waste Pump Boat RV

12V marine and RV macerator waste pump

The SEAFLO SFMP1-120-01 is an intermittent-duty macerator pump for emptying a compatible holding tank through a 25 mm discharge hose. A four-blade cutter reduces waste solids before discharge, while the sealed, thermally protected motor includes an accessible manual rotation point for clearing a jam after the electrical supply is isolated.

Suitable boats and waste systems

• Motorboats, sailing yachts, cruisers and workboats with a black-water holding tank and a legal pump-out/discharge arrangement.
• Motorhomes and RVs where the inlet and outlet connections match the waste system.
• Intended for transferring maceratable toilet waste from a tank, not as a direct toilet-bowl flush pump.
• Discharge overboard is only permitted where local and national regulations allow it; otherwise use an approved shore or treatment connection.
• Not for sanitary products, wipes, cloth, hard objects, fuel, oil or potable water.

Verified technical specification

Check before ordering and installing

• Confirm a 12V DC system, 1-1/2 in MNPT inlet and 1 in discharge hose.
• Use manufacturer-specified cable, fuse and isolation switch. Current rises as discharge pressure increases, so undersized wiring causes voltage drop and overheating.
• Mount where the pump can be serviced and where any leakage cannot damage electrical equipment.
• Keep the discharge hose as short and unrestricted as practical; never operate against a closed valve.
• Isolate power before using the manual anti-jam point. Remove non-maceratable material from the tank/system.
• Package: one SEAFLO macerator pump. Hoses, valves, fuse, switch and tank fittings are separate unless explicitly pictured.

Frequently asked questions

Can it pump toilet waste?

Yes, from a compatible holding-tank system, provided only maceratable waste and suitable toilet paper are present.

Can it run dry continuously?

No. The manufacturer permits only short dry-running periods; stop the pump when the tank is empty.

Can I discharge overboard anywhere?

No. Marine sewage discharge is regulated. Use only an arrangement permitted in the operating area.

What should I do if the cutter jams?

Disconnect and isolate the electrical supply before using the manual rear rotation point or servicing the pump.