black rusty water from gas pipe?

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black rusty water from gas pipe?

Author: erichman (WA)

I mistakenly used a section of black (gas?) pipe when I put in a new tub/shower system in a 1940s house with lots of old piping. I used the pipe because it was handy. Now each time I open the tap to the tub, I get a couple seconds of blackish/brown water. I don't recall seeing this color water before replacing the old system with this new one. Is there a way to get rid of this without tearing into the wall again to replace the pipe? HELP?

Re: black rusty water from gas pipe?
Author: hj (AZ) As soon as you said "black pipe" and "water" in the same sentence you answered your own question. Black pipe will ALWAYS rust when water goes through it.
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Re: black rusty water from gas pipe?
Author: North Carolina Plumber (NC) It will never get better with time. It needs to be removed and replaced with copper or pex depending upon the application.
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Re: black rusty water from gas pipe?
Author: hj (AZ) Or galvanized if the rest of the system is steel piping.
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Re: black rusty water from gas pipe?
Author: packy (MA) sadly, the wall must be opened up and the iron pipe replaced. no other way out of this one..
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