Galvanized Pipe To Copper Pipe Connection

The dielectric fittings commonly available in home centers photo 1.

Galvanized pipe to copper pipe connection.

Sweat on the copper part of the dielectric fitting which is threaded coat all the threads with tape or pipe compound and. The problem with galvanized pipe is that it reacts with the minerals in the water supply. How to connect copper to galvanized plumbing. The reaction creates scale which will eventually clog the pipe.

Next connect copper pipes together until you reach the galvanized pipe threads. When water runs through pipes that are made of two different metals it creates an electrical charge that can cause corrosion and leaks in the pipe. When connecting a copper pipe fitting to a galvanized steel pipe you must use a dielectric fitting. The rubber or plastic.

The easiest way to connect the copper and galvanized pipes is to use your wrench and unscrew the galvanized piece from the connecting threads. Eventually galvanized pipe will have to be replaced and when that happens your choices are to replace it with more galvanized pipe copper pipe or plastic pipe. It is possible to connect a copper pipe fitting to a galvanized steel pipe. Also be aware that directly joining two different types of metals in this case galvanized steel pipe and copper can cause rapid corrosion at the joint called dielectric corrosion.

When you join pipes made of dissimilar metals the 2010 california plumbing code requires you to do it with a dielectric union.