Originally Posted by zigzagguzzi
My suggestion earlier is no different tan the combined tanks on some b vans and Bambi's. Same idea, exactly the same thing. So some of you are saying the combined tanks from the factory are unsafe? Jim
Zig, the trailer in question has a black tank that is installed partially above floor level, so the usable capacity when in use as a combined grey/black tank is prohibitively small before sewage backs up into the shower. In contrast the B vans and Bambis where there is a single holding tank have the tank below floor level or (on some SOBs) have a shower pump.
The newer trailers with a single tank have some sort of provision for determining the tank level. In most cases the tanks are sized so that in typical usage the freshwater tank is exhausted before the holding tank overflows.