Raritans are the finest on which my rump has had the pleasure of being perched.
No valves, pumps or anything else. Just hit the lever and it flushes like a household commode.
I would only use fresh water through these things, lots of complex gadgetry inside. The raritans are a bit of a pain to remove and install. They are self contained, with the exception of the water line, waste line, and
wiring. Which means that to
service you have to unbolt them from the floor and spin them around to access anything. Unless you have a bulkhead you can cut an access hole.
Leave the hoses and such long, as the
boat that had them didn't have enough room to get to the hose clamps without hugging the throne. Because they mount flush to the wall, I had a 3 inch gap to
work with while standing on my
head. (Flexible wire extension on a 1/4 inch ratchet!)
You'll want a ratcheting box wrench for the mounting
hardware, as a socket and ratchet threaten the finish of the ceramic.
(Note:
Removal was not for operational problems, but for remodeling!)