TOILET

Best thing I ever did on my boat was to get rid of the ITT/Jabsco/Par and put in a manual Lavac.
Pete
 
I'd go for manual lavac with a porcelain bowl. When our plastic bowl delaminated (don't ask, too much curry I suspect!) I replaced it with a non-standard (porcelain) bowl I found at the chandlery barge. Seat and lid from B&Q. I put a small pump on the inlet and Henderson MkV on the outlet. Much simpler, and cheaper, as there's no vacuum to maintain, no electrics to go wrong and it's easy to operate for anyone who can walk and chew gum. But diy is not everyone's cup of tea, and lavac is prob'ly the best off-the-shelf..
 
Absolutely no problems with a properly installed manual Lavac. There are two slightly different versions to chose from but operate in exactly the same way. Correct layout out of the pipes is essential, ie in loops up to well above the waterline. The inlet one has a small air bleed that must be fitted (and there are two different sized air bleeds depending on the height of the bowl). the pump is a standard diaphragm bilge pump so is easy to service when necessary and will never send a jet off water up your sleeve.

You'll find online installation and operating instructions if you want to check them out.
 
You seem convinced already, but a search will throw up plenty more threads on the subject, in all of which at least 90 per cent heartily recommend Lavac. Apart from the fact that they work, if you'd ever had to install the ludicrous array of parts in the service kits of other makes, you'd be even more convinced. KISS.
 
Lavac every time. The two variants are the Popular, which is the most popular (because it is cheaper) and the Zenith. The latter has a slightly bigger bowl and is made in Britain, which is why it costs more than the Pop. There may be a slight difference in quality of some of the fittings, but whatever you choose it will be a robust set up and if the worst comes to the worst it is easy to unblock. Pipework is a bit more extensive, depending upon how you fit the pump i.e. through bulkhead or otherwise. If you are considering a holding tank you can, with a couple of diverter valves in the system, use the one pump to flush to sea, flush to tank and pump out the tank. Blakes Lavac people are very helpful.
 
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