Re: Re: Iron to Copper pipe


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Posted by Kevin Pate on January 12, 1998 at 11:58:11:

In Reply to: Re: Iron to Copper pipe posted by Hill on December 12, 1997 at 08:12:00:

Do you know how fast the copper-to-steel corrosion occurs? I did some repair work that I knew was going to be temporary and did not use dieletric couplings. Is this stable for a few months?

: Yes, use a dialetric union or else the galvanized fitting where the copper is connected will rust from the inside. Use Type M hard copper - it has a red stripe. Hill

: : I'd like to try a bit of replacing an old, long horizontal run of galvanized iron water supply in my unfinished basement with copper - in hopes of getting some better pressure to some 1st and/or 2nd flr. fixtures. When I remove about this 20' section, do I have to do so at a threaded joint, and put a simple threaded to sweat joint and run the copper? Or do I need a "dielectric" fitting at each union between the two pipes? Also, can someone give the 10-cent explaination of the 'type' of copper pipe to use? Not the size, but I've seen some graded by 'type'... and helpful hints? THANKS!




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