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Old 04-23-2008, 11:20 AM   #1
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Copper pipe + galvanized valve - Bad???


My home has all copper pipe but I noticed that the service valve to the laundry is galvanized. From the valve it's simply rubber hose to the washing machine.

Is this bad?? Will it corrode?? Should I replace it with a brass valve?? It's been this way for a long time.

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Old 04-23-2008, 12:39 PM   #2
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Copper pipe + galvanized valve - Bad???


You should not have copper joined directly to galvanized. You will get corrosion. There should be a dielectric fitting between the two. I would replace the shut off with brass. As a side note, it is always a good idea to close the shut off valves when your washing machine is not in use.

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Old 04-25-2008, 11:41 AM   #3
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Copper pipe + galvanized valve - Bad???


If its been this way for a long time don't worry about it. If you do not see corrosion now and its been that way for a long time why worry. I think it may have something to do with it being at the end of a line and no path to ground across the two dissimilar materials that is why you don't have corrosion. Just a guess.
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