Originally Posted by s1000pre
Does anyone know if the black tank sprinkler is an actual sprinkler that sprays the entire inside of the tank. Or is it just a filling valve connected to an internal hose or… which allows you to fill the black tank with fresh water used to flush it clean.
I believe it to be multiple jets of water (or a sprinkler as you put it - although a stationary one) designed to spray around all sides of the tank. This is because on several occasions I have re-dumped my black tank using it and seen bits of toilet paper pulp come out that were not there in the original dump. And it was too much to be just what was added since the prior black dump.
And I have a macerator toilet and macerator pump, so the poo is generally dumped very thoroughly.