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Old 07-09-2009, 11:30 PM   #1
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Copper galvanized pipe corrosion


I need to pipe a hot water recirculation system for my hot water heater. I need to T into the drain spigot on the bottom. I will use a short galvanized nipple, galvanized T, then a spigot. The other side of the T will be copper. How can I keep this from corroding? It already has this system installed and has very bad corrosion. Do they sell 1/2 copper nipples, T's, etc.? I could also go with a dielectric union at the top of the T and at the spigot. What are my options here?

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Old 07-09-2009, 11:32 PM   #2
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Copper galvanized pipe corrosion


Please use brass T's and nipples

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Old 07-10-2009, 11:02 AM   #3
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Copper galvanized pipe corrosion


What Plumber 101 said. Steel and copper do not mix. Bronze is nonreactive with copper and will not cause the the threads in your tank to corrode either.
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