Quote:
Originally Posted by Bill
You are right - TM could easily make and install a black tank, but that is not the issue. The difficulty that TM faces is that plumbing code, including RVIA code for campers, requires the black tank to be vented through the roof. Venting through the sidewall or floor is expressly forbidden, as is any design that requires action (such as connecting a pipe) by the owner/user. In a folding trailer, this is a nearly impossible requirement. TM has struggled with this since Thetford discontinued the recirc, and has not yet (in my opinion) found a good solution.
Bill
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They figured out a way to do it when they started installing the Sealand toilets.
However, it wasn't very attractive nor was it very creative. I think that it could be done with PVC pipe.