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reading through old threads there are some here who don't think dielectric fittings work. My understanding is that they serve to seperate two dissimilar metals to prevent corrosion caused by a dielectric reaction. I found four types. The copper flex and large nut type seem to be truly...

I want to connect an overflow drain from a water heater catch pan into a drain stack 12" below where a drain connection enters from the kitchen sink. Is this legal?

As preferred, sunday night at 8pm we realize there is water coming from under the sink. Ripped out to get into the wall to find a leak underneath - a tiny hole in the copper stack coming out of the slab. The house is 3 1/2 years old. There is green trails across the outside of the pipe...