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A supply house guy in Tulsa told me to stop trusting the label on dielectric unions
Was picking up a few things at a supply house off 11th Street in Tulsa last month and the counter guy, Dale, said half the dielectric unions coming through his door are just coated steel with a fancy sticker on them. He pulled out a magnet and showed me one stick to the wrapper, then told me to check every batch that way before it goes on a water heater. I have been installing these for years and never once tested them, so now I am wondering how many I put in that are already rusting from the inside. Has anyone else run into this with a supplier, and did you switch brands or just start bringing your own magnet?
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lee.diana6d ago
Magnet trick is smart but it only catches the steel core, not the cheap zinc coating that flakes off after a few months on hot water. Worth checking if the ones you already installed show rust at the threads when you drain a tank.
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