Topic: Dielectric Union
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Answers to Common Questions
which dielectric union?
Quoting kbrotherman: Any idea why there's a suggestion to add a brass ground joint, when the dielectric union was designed to separate brass from steel? A dielectric union is designed to separate steel from copper, not from brass. While bra... Read More »
Source: http://www.askmehelpdesk.com/plumbing/joining-black-steel-stainle...
Why Using a dielectric union to join galvanized and copper water ...
Dissimilar metals in contact to each other cause a Galvanic Reaction resulting in one or both metals corroding and causing a leak. A Dielectric Union separates the two metals by uses of rubber and/or plastic thus preventing a Galvanic React... Read More »
Source: http://wiki.answers.com/Q/Why_Using_a_dielectric_union_to_join_ga...
What Is a Dielectric Union Pipe Fitting?
dielectric union fitting is one which is often used in water supply lines, and other connections which require an adapter to be placed between two different pipes. The adapter is used to connect pipes of different types together, for exampl... Read More »
Source: http://www.doityourself.com/stry/what-is-a-dielectric-union-pipe-...
More Common Questions
Answers to Other Common Questions
Dielectric unions are used to prevent dissimilar metals from coming in contact with one another. When 2 different metals are in contact one or both may corrode, sometimes severely. In your case the steel tank is isolated from the copper pip...
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Source: http://boards.hgtvpro.com/eve/forums/a/tpc/f/9981023982/m/3161058...
A dielectric union is designed to break the electrical contact between two dissimilar metals (to prevent galvanic corrosion). Most of the flexible copper connector hoses on water heaters have a plastic washer that acts as a dielectric union...
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Source: http://www.nachi.org/forum/f22/dielectric-union-24697/
