Join Date: Feb 2010
Location: Narragansett Bay
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Re: New head suggestions, toilet
Marine heads just don't often work like those ashore, so guests need instructions. I leave laminated instructions on the counter in the head, even though I do show newbs how to properly flush. To a non-sailor, all manual pumps seem odd and the newbie almost never pumps enough clean chase water (ie one gallon min). The electric mascerating heads are closer to shore-like, but still aren't a simple flush to do correctly. You can press the combo button, which adds water and empties the bowl simultaneously. However, it needs to be held for 10-15 seconds after the bowls is clean to properly clear the waste lines, which newbs never do. They see the waste is gone and that's it, even though it's literally sitting in that hose behind the head. I prefer to use the combo button to empty the bowl, then the fill button to literally fill the bowl with clear water, then the flush button to push it through the lines to clear them.
The closest to shore-like is vacu-flush. They work like the head on a airliner, one push, a vacuum is created and then a sudden woosh.... Very expensive heads and you need to find room for the vacuum generator. The sell integrated holding tank with the vacuum generator, or you can use your existing holding tank. The biggest advantage of vacu-flush, is they take a fraction of the water to clear the lines, so your holding tank capacity multiplies.
I would be very leary of having an electric head, if the boat only had one head. When electric bits break (and they do) you need a backup, while you repair. Also, carry a ton of spare parts. I carry spare valves and at least one spare mascerating pump.
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In the harsh marine environment, something is always in need of repair. Margaritas fix everything.