Wrap plumbing tape around the threads of the galvanized pipe and screw the galvanized half of the union to it.
Galvanized water pipe to copper.
Copper plumbing pipes can sometimes fail when water temperature is above 180 degrees.
If this condensation freezes it can restrict or even block water flow.
The easiest way to connect the copper and galvanized pipes is to use your wrench and unscrew the galvanized piece from the connecting threads.
Galvanized pipes are steel pipes that have been dipped in a protective zinc coating to prevent corrosion and rust.
Ideally the old galvanized pipe should be replaced.
Add a new galvanized steel pipe length nipple at each end and solder in your copper.
What are galvanized pipes.
Copper pipes are susceptible to the formation of condensation inside the pipe.
When it was invented galvanized pipe was an alternative to lead pipe for water supply lines.
Finally join the two ends with the large nut.
A prime example of this is when galvanized pipe is connected to copper or brass.
Galvanized piping was commonly installed in homes built before 1960.
Whenever you join copper water lines to galvanized steel pipe you should be concerned about the corrosion caused by joining two dissimilar metals called galvanic corrosion an electrochemical reaction occurs that causes the steel pipe in this case to rust and clog up.
Tighten the fitting with a pipe wrench.
As early as the 1960s galvanized pipes started being replaced with copper.
Copper plumbing can also introduce a metallic taste to water.
The process of dipping steel pipes into molten zinc to galvanize them has been around since the early 19th century and galvanized pipes still are common in outdoor and industrial water systems.
Use sandpaper as needed for cleaning pipe then take the union apart and solder the brass end to the copper and screw the steel end to the galvanized pipe.
Next connect copper pipes together until you reach the galvanized pipe threads.
Copper is smaller and lighter than galvanized steel pipes which makes them easier to work with and install.
