Quote:
Originally Posted by JamieGeek
There are a few models with this "feature" with a lot of speculation as to why its there. From what I've read (ours doesn't have one) Thor puts the valve on when the waste tank is across the coach from the dump outlet. I think one of the hypothesis has been to keep that long run empty--especially during winter storage.
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Well, that seems most plausible. Now I'm wondering if I should keep it open during normal camping and close it only for storage. If I do keep it open it would add maybe a gallon or two to the black tank capacity, yet again that tube (pipe) would be full of effluence. Decisions decisions.