Originally Posted By: Tom Cameron
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Can brass nipples be used to connect existing copper lines to a hot water heater in the place of dielectric unions? I heard somewhere brass was compatible with both steel and copper.
I have seen/heard a lot of talk about how copper cannot or should not be connected directly to a hot water heater due to dissimilar metals etc. But there seems to be controversy here? Anyone ever seen a heater fail when there was copper to steel involved? If yes how old was the installation?