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.
Galvanized water pipe to copper.
Add a new galvanized steel pipe length nipple at each end and solder in your copper.
What are galvanized pipes.
A prime example of this is when galvanized pipe is connected to copper or brass.
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.
Most new homes built in the 1980s used copper for indoor plumbing.
Wrap plumbing tape around the threads of the galvanized pipe and screw the galvanized half of the union to it.
When it was invented galvanized pipe was an alternative to lead pipe for water supply lines.
Galvanized piping was commonly installed in homes built before 1960.
Galvanized pipes are steel pipes that have been dipped in a protective zinc coating to prevent corrosion and rust.
The connecting points of two different pipe materials becomes rotted by galvanic corrosion in a relatively short period of time.
Ideally the old galvanized pipe should be replaced.
4 remove the washer from the central nut of.
If this condensation freezes it can restrict or even block water flow.
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.
Tighten the fitting with a pipe wrench.
The easiest way to connect the copper and galvanized pipes is to use your wrench and unscrew the galvanized piece from the connecting threads.
Copper plumbing pipes can sometimes fail when water temperature is above 180 degrees.
Copper plumbing can also introduce a metallic taste to water.
Finally join the two ends with the large nut.
Next connect copper pipes together until you reach the galvanized pipe threads.
