The rubber or plastic.
Galvanized pipe to copper pipe connection.
When connecting a copper pipe fitting to a galvanized steel pipe you must use a dielectric fitting.
To limit this problem make the steel copper connections with special dielectric unions rather than with a regular coupling.
The problem with galvanized pipe is that it reacts with the minerals in the water supply.
The dielectric fittings commonly available in home centers photo 1.
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 you join pipes made of dissimilar metals the 2010 california plumbing code requires you to do it with a dielectric union.
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.
Sweat on the copper part of the dielectric fitting which is threaded coat all the threads with tape or pipe compound and.
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.
This will keep the.
How to connect copper to galvanized plumbing.
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.