Then take the union apart and solder the brass end to the copper. Screw the steel end to the galvanized pipe, using Teflon tape as needed. Finally, join the two ends with the large joining nut.

This low VOC, fast set cement can be used to solvent weld copper tube sizes (CTS) CPVC hot and cold potable water pipes and fittings up to 2 in. diameter with interference fit. Galvanized. Commonly ...