We have a Lavac that does the business (!) but I am sorry to say that the loudest noises in our heads don't come from the loo. /forums/images/graemlins/frown.gif
The dometic toilets fitted to our Princess 42 aren`t vacuum units with an accumulator and cam operated pump (I built a 70ft narrow boat and fitted a vacuflush system from Lee Sanitation which used that system and as you say it pumps away for quite a while after you flush).
No, the Dometic units we`ve got are a macerator pump system but they do sound and operate very much as a vacuum system might only without all that clunking as it recharges it`s self.
Operation is simple with a short flush button, a long flush button (both of which just require a momentary push), and a drain button that works for a long as you hold it down (if you wanted to drain the bowl down for what ever reason).
I thought the boat was going to have a jabasco system fitted and it was a really pleasant surprise to find these fitted. I suspect Princess will be fitting all boats with them from now on.
Sounds like you have the dometic masterflush henry. Almost identical to tecma - there's a macerator pump built into the toilet itself and touchpad switches for the user, just like tecma
I dont have any info on which is better out of tecma and dometic. I suspect they are both top quality products and both are quiet. Tecma prob has more spare part agents in the med as lots of little chandler/elec shops stock Tecma gear, whereas Dometic seem to appoint one agent in each big town and you have to get parts thru that agent (so far as I can tell, based on south of France mostly. Happy to be corrected)
I guess those just haven't caught on in Europe Bejasus becuase they are "US styled" not "Euro styled" toilets. To Europeans, US toilets (in hotels etc) always look a bit strange and less stylish than Euro styled sanitaryware
I see their website claims some will "flush rag, quarters and panty hose". Actually the dometic vacuflush will do that too. Thing is, that's only as far as the holding tank. You then need another pump to empty the holding tank, and it's quite hard to find a black tank emptying pump that will reliably do rags, quarters and panty hose. A macerator/impellor pump wont, obviously. A diaphragm pump might, but you're playing some russian roulette as to whether the panty hose gets stuck in one of the joker/flap valves and stops the pump working. A pump that will do it reliably will cost big $$$.
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A diaphragm pump might, but you're playing some russian roulette as to whether the panty hose gets stuck in one of the joker/flap valves and stops the pump working.
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And trust me - when those one-way valves get jammed - its one unpleasant job - as I found out when someone ran my holding tank emptying diaphragm pump with the seacock shut. Flipped one of the one-way valves inside out. Ugh....
Yup. I fitted an electric seacock which has a microswitch that senses when it's open. The microswitch (a) activates a flashing indicator light and (b) via a relay provides 24dc for the pump (you still have to turn the "pump on" switch, but the microswitch controls the 24v feed to it, so you can't run the pump with the seacock shut)