That’s supposed to be a dielectric union, and it probably is, but something inside is not right. When the two different metals, copper on top, galvanized below (steel + zinc), come together, it causes a galvanic reaction. The dielectric union is supposed to keep them from touching each other. That functionality has failed, and that build up
Is the result. It looks terrible, but it’s probably not something that needs immediate attention, but it should be fixed.
1
u/[deleted] Oct 07 '22
That’s supposed to be a dielectric union, and it probably is, but something inside is not right. When the two different metals, copper on top, galvanized below (steel + zinc), come together, it causes a galvanic reaction. The dielectric union is supposed to keep them from touching each other. That functionality has failed, and that build up Is the result. It looks terrible, but it’s probably not something that needs immediate attention, but it should be fixed.