Galvanized Pipe To Copper Pipe Connection

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Galvanized pipe to copper pipe connection.

The reaction creates scale which will eventually clog the pipe. 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. To limit this problem make the steel copper connections with special dielectric unions rather than with a regular coupling. How to connect copper to galvanized plumbing.

Sweat on the copper part of the dielectric fitting which is threaded coat all the threads with tape or pipe compound and. When you join pipes made of dissimilar metals the 2010 california plumbing code requires you to do it with a dielectric union. The easiest way to connect the copper and galvanized pipes is to use your wrench and unscrew the galvanized piece from the connecting threads. When connecting a copper pipe fitting to a galvanized steel pipe you must use a dielectric fitting.

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. 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. The problem with galvanized pipe is that it reacts with the minerals in the water supply. Next connect copper pipes together until you reach the galvanized pipe threads.

The dielectric fittings commonly available in home centers photo 1.