dielectric union

  1. Keith R

    Commercial water heater dielectric union

    I'm the facilities manager at a not-for-profit youth center. I need to deal with three 1 1/2" dielectric unions (code requirement) on two 100 gal. water heaters. At least they appear to be 1 1/2". In each case a ring of corrosion has formed around the steel side of the union/galvanized nipple...
  2. Charlie A

    Dielectric union corrosion

    I was looking at a thread from around 2015 where you showed a couple of great photos of the interior corrosion of a dielectric union. Our house water is sourced from a well that has hard water (we have a softener). Dielectric unions (and maybe galvanized pipe more generally) seems to be really...
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