Galvanized Pipe To Copper Pipe Connection

The dielectric fittings commonly available in home centers photo 1.

Galvanized pipe to copper pipe connection.

The problem with galvanized pipe is that it reacts with the minerals in the water supply. 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. When you join pipes made of dissimilar metals the 2010 california plumbing code requires you to do it with a dielectric union. The reaction creates scale which will eventually clog the pipe.

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. How to connect copper to galvanized plumbing. To limit this problem make the steel copper connections with special dielectric unions rather than with a regular coupling. The rubber or plastic.

This will keep the. It is possible to connect a copper pipe fitting to a galvanized steel pipe. Sweat on the copper part of the dielectric fitting which is threaded coat all the threads with tape or pipe compound and. 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.