toilet mount not directly above black tank?

[Schneider591]

Im in the middle of a gutted trailer renovation and don't have a great spot for the toilet to go that would be directly over a black tank. the perfect location would be just to the outside of the frame rail. that would require a 90 degree or so bend to the toilet drain that leads to the black tank mounted just inside the frame rail. there is already a hole through the frame at this point. and previously this is how a toilet was mounted however no tanks or plumbing came with this trailer. the overall run of the line would be less than 6-8 inches id imagine. only a 2 inch or so frame rail.

[CRH]

My toilet is not directly over the tank. My toilet is on a wooden box pedestal. The toilet flange has an elbow on it and then a 4 to 6 inch piece of straight pipe that goes into the tank.

[tevake]

The set up in my 345 motor home is like CRH describes, the elbow seems to be about a 60 degree turn, and works fine. I would think having some fall/downward slope in all sections the line would be a good idea.

Cheers Richard

[AWCHIEF]

Alternatively you could go with a quality composting toilet and do away with the black tank.

[AnnArborBob]

In my opinion, an elbow like that would cause problems with material movement. At a minimum you would need to use a whole lot more water when flushing which will make camping without water & sewer hookups less enjoyable. If you must have such an arrangement, I would #1 consider a composting toilet, or #2 look into a macerating toilet which will break down the solids and make it easier to move them to where you want them to be.

[xrvr]

Push the pettle part way down and fill the toilet a couple of inches or more, this facilitates the waste to go on down. My Avion needs to have this done to flush properly.

[USAtraveler]

As Richard states, a small downward slope of the pipe into the black tank is needed, and as CHR points out, mounting the toilet on a low pedestal will accomplish the desired slope. Happy plumbing!