Hot water tank plug never seen one like this
We bought a new to us travel trailer with an Atwood hot water heater. Instead of the normal nylon drain plug they have a galvanized square plug on it For the life of me I can't get it off it seems ...
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Terribly corroded due to electrolysis. I would freeze the plug with Freon, then try rocking the plug back & forth till it breaks free. Good luck, hope you do not lose the aluminum threads and require a new tank.
