where to introduce a loop on a typical el.toilet setup?

vas

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as discussed in a thread a couple of weeks ago, I do have an issue with smells from the black water tank coming to the two heads.
I've been extremely careful when designing and fitting the whole system to avoid anywhere in the pipes black water to stay, so all the system is a continuous sloping afair from heads to the TOP of the black water tank.
Hence all smells prefer to turn up at the heads and not vent out through the carbon whatever filter, nice!

Thought I'll sort it out and sort out a small leak I had on one of the el.toilets.
Mine look like this
https://www.asap-supplies.com/eu/sanitation/toilets/jabsco-marine-electric-toilet-507716

together with the plastic triangular thingy with the joker n/r valve however you call it.

Enough with the description, question is simple:

Do I introduce a loop just after the joker valve and keep the bottom 70-80mm of the bowl full of seawater all the time?
This means all the macerator plastic bits and the bronze casing of the motor as well as the plastic bottom of the toilet will be in seawater all the time. Is that clever, or will I need a new toilet in two years time?

Alternatively I can introduce the loop just before the top entry to the black water tank. Would that be better?

Problem is that all boats down here are permanently diverted to water (many don't even have blackwater tanks) so all bowls are empty but again are clean of smells as well.

Tecma and freshwater flush not an option, so not discussing them right now.

cheers

V.
 
thanks,

wondering if you do have a loop though, when you flush, is there any water staying on the bowl, or it empties soon after?

cheers

V.
 
Bowl empties without refilling but it's designed to do that... the only time it refills is when the joker valve needs replacing (typically once a year). I will ask Mr Shan about the loop and report back.
 
Loop is after the joker valve and pump but before the black water tank. Our black water tank is vented through a carbon filter, like yours.
 
Hi Shan, this Odourlos says it's organic and biodegradable but does it colour the contents of the holding tank green?
I live in a sensitive area and hate to leave a coloured patch in my wake
 
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