Question: Why do you have two water ports in an RV?

How do you hook up two water tanks in an RV?

Youll need to connect a water line, the larger the better, at the bottom of each tank and a vent line at the top of each tank, linking the tanks together. Some tanks have auxiliary threaded fittings already installed, but additional fittings can be welded on or spun on by any properly equipped RV shop.

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