I've heard that all galvanized pipe to copper connections need a dielectric (sp?) union to prevent premature corrosion.
My first question is...is this true? The reason I ask is I just looked at a home I may purchase and I noticed that there were a few connections where some new copper pipe (with threaded coupling) was threaded directly into the existing galvanized water supply line. Is this going to be an issue?
Thanks for your help!!!
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