Do I have to worry about Bimetallic corrosion corrosion in this compression fitting?
requested to make an answer:
I believe you will find it is nickel plated brass, This is a common type of fitting and there would not be a problem. One of the largest problems for galvanic corrosion that I have seen is between copper and galvanized. A dielectric union helps but with a high mineral level in the water some corrosion can bee seen in just a few years. Most of the compression fittings for bathrooms &amp; kitchen sinks are nickel plated brass it keeps them from growing green stuff on the brass and it is quite common.