Posted by Hill on January 16, 1998 at 04:46:52:
In Reply to: Re: Copper/Iron Pipe Corrosion posted by J.I. on January 15, 1998 at 17:11:44:
: : I had to make a temporary repair with some copper pipe to existing iron water pipe, but I did not use dielectric unions. Does anyone have a feel for how fast galvanic corrosion will occur? Is this okay for weeks? Months?
: : Thanks!
: : Kevin
: sometimes for years
And sometimes not for years. I have seen completly rusted closed pipes in 1 1/2 years on the hot water side. Think it depends on the water qualities and the shape the iron pipe is in. My ballpark guess would be 6 months... Hill