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- Galvanic Corrosion
It is the electrical current generated between dissimilar metals that are in contact in a plumbing system which causes destructive corrosion, not to be confused with chemical corrosion, which also exists. In order to successfully combat the galvanic corrosion, the metal parts must be separated in such a way that the electrical current is below 1% of the galvanic current which would exist with metal-to-metal contact. This is the function of the dielectric(isolated) union and flange differentiating them from the standard union and flange or pipe fittings.
Use dielectric union and flanges wherever dissimilar metals occur in piping and plumbing systems or where Water Conditions, Oil piping, Plating Tanks, Water Pump and Steam Lines.