Galvanized Water Pipe To Copper

Copper pipes are susceptible to the formation of condensation inside the pipe.

Galvanized water pipe to copper.

Galvanized pipes are steel pipes that have been dipped in a protective zinc coating to prevent corrosion and rust. 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. Copper plumbing pipes can sometimes fail when water temperature is above 180 degrees.

Next connect copper pipes together until you reach the galvanized pipe threads. 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. 4 remove the washer from the central nut of. 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.

Finally join the two ends with the large nut. A prime example of this is when galvanized pipe is connected to copper or brass. 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.

Copper plumbing can also introduce a metallic taste to water. The easiest way to connect the copper and galvanized pipes is to use your wrench and unscrew the galvanized piece from the connecting threads. Most new homes built in the 1980s used copper for indoor plumbing. The connecting points of two different pipe materials becomes rotted by galvanic corrosion in a relatively short period of time.

Add a new galvanized steel pipe length nipple at each end and solder in your copper. If this condensation freezes it can restrict or even block water flow. Ideally the old galvanized pipe should be replaced. Copper is smaller and lighter than galvanized steel pipes which makes them easier to work with and install.