Hot Water Tanks with Anode Rods
I don't know why this just came to mind during camping season but when winterizing, I've always drained the hot water tank, flushed it out and put it on bypass before putting anti-freeze in my system....
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The anode rod protects the tank and fittings at their threaded connections with the tank. These connections may have dissimilar metal fittings screwed into them. Including bronze relief valve, cast metal housing for temperature control valve that screws into the tank that also includes a copper temperature probe, cold water inlet fitting & brass check valve in the hot water outlet.
