Raritan Atlantes Discharge Pump Repair Kit

The Atlantes is Raritan's electric marine toilet, and the discharge pump is the part that actually moves waste out of the bowl and down the line. So when that pump starts weeping at the base, loses its prime, or runs rough and won't clear, you're looking at a service job, not a reason to tear out the whole toilet. This kit gives you the wear parts to bring the discharge pump back to life.

Here's what's usually going on. Seals harden with age, the impeller wears down, and you end up with a slow leak at the base plate or a pump that spins but doesn't push. Salt, mineral scale, and years of duty cycles all speed it along. Because this kit is made specifically for the Atlantes discharge pump, the parts seat in the housing the way the factory intended, which matters a lot on a sealed pump that has to hold prime.

Plan on roughly 90 minutes to two hours for the repair. And honestly, the pump itself isn't the hard part. The space around it is. On a 30 to 40 foot sailboat the head compartment is cramped, and getting the pump out for service takes some patience and a few skinned knuckles. A flexible discharge hose helps you line everything back up when it's time to reassemble.

A few details save people a second trip into the head. Before you set the new seals, scrape every bit of old gasket residue off the base plate with a plastic scraper. Leftover residue is the number one reason a pump leaks right after a rebuild, so get that surface clean down to bare plastic. Go easy on the housing screws too. They thread into plastic and they'll strip if you lean on them.

Check the motor shaft while you have the pump apart. If it shows corrosion, polish it smooth before the new seals go on, otherwise the fresh seals wear early and you're back in there next season. It's a two minute step that pays off. This is also a good moment to look over the rest of the plumbing run while everything is open and easy to reach. A little inspection now beats a haul-out headache later in the season.

Boats with a long uphill run from the head to the through-hull tend to fight backflow, and a lot of owners add a check valve while the system is open to keep waste from draining back toward the bowl. On planing powerboats, vibration works hose clamps loose over a season, so double-clamp the discharge connections when you button everything up. Small stuff, but it's the difference between a repair that lasts and one that nags you.

On fitment, the kit suits 12V and 24V Atlantes models, which covers the bulk of the electric toilet line. Older pre-2005 units may need the updated mounting plate, so if you're not certain which generation you're working on, check your model records before you order. Pairing the toilet with a Raritan controller that limits run time is also worth it. It keeps a fresh impeller from cooking itself on a long discharge cycle.

Raritan builds gear for pleasure boats all over the world, and the company has always leaned toward keeping our waters clean, so a working marine sanitation system isn't just a convenience, it's part of being a responsible boater. This kit fits right into that. It's the practical fix for an owner who wants to keep a good toilet in service instead of spending several times the money on a full replacement. And because it's genuine Raritan, you're rebuilding the pump with the exact parts it was engineered around.