Quote:
Originally Posted by Wavery
It would be so easy and cost effective for TM to have a custom, drop-in, black water tank made. Once the mold is made, the rest of the process is easy. They could even have blow-mold tanks made. They are relatively cheap and easy. There are a lot of companies that will build them (in bulk) from dimensions over the internet.
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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