Waste Valve Always CLOSED or Always OPEN?
Research, Previous Owner, & 1 or 2 RV Owner's I happened to ask: Conclude and Advise me to ALWAYS LEAVE WASTE TANK CLOSED till she fills so the Tank can build Gravity for BOTH the dirty waste and sem...
Forum Discussion
I leave my black tank valve closed until the tank is at 3/4 or more, then drain. And run the black tank flush after that.
I suppose there are some tank designs in which his method would drain ok. But I would not want to try.
I suppose there are some tank designs in which his method would drain ok. But I would not want to try.
