Quote:
Originally Posted by Formia1
We have a 2018 Vegas 25.6 and. It also has a second black tank valve that was never discussed during pre-delivery. Thor plumbs the bathroom sink on this model to the black tank to balance the volume between the tanks.
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My Vegas has the Bathroom sink plumbed into the Black tank
Based on this Forum, it seems to be a common way that many RV manufacturer's plumb the lines