die-electric union

Does anyone have any info on this? I have a situation where copper and galvanize piping are joined together improperly. Looking for a good way to write it up.

Thanks

I had the same case recently

http://www.hammerzone.com/archives/plumbing/systems/components/union_de/intro.htm

I wrote it up as two dissimilar metals touching causing corrosion

http://www.nachi.org/forum/showthread.php?t=24697&highlight=dielectric+unions

Another thread

http://www.nachi.org/forum/showthread.php?t=18202