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Old 01-25-2011, 09:37 AM   #1
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Copper Flex Gas Line Corrosion


Hi all,

Yesterday I noticed what appears to be some corrosion at the beginning of a flexible copper gas line that feeds my dryer. Could this be a result of interacting with the galvanized pipe that it is tapping off of? Does this look like something that should be replaced immediately? Thanks.
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Old 01-25-2011, 09:52 AM   #2
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Copper Flex Gas Line Corrosion


Yes, I would say it needs to be replaced immediately! I'm not a licensed gas installer, nor am I very knowledgeable regarding gas service. I know however it's not something to mess with if you don't know what you're doing. It appears it wasn't done properly in the first place. There are others here that can give you better advice regarding gas codes, etc.
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Old 01-25-2011, 09:58 AM   #3
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Copper Flex Gas Line Corrosion


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Yes, I would say it needs to be replaced immediately! I'm not a licensed gas installer, nor am I very knowledgeable regarding gas service. I know however it's not something to mess with if you don't know what you're doing. It appears it wasn't done properly in the first place. There are others here that can give you better advice regarding gas codes, etc.
Thanks Brad. Yeah I figured it doesn't look good....hopefully there's a licensed gas installer that can give some input.

Let me add that I don't plan on trying to fix this myself...I would definitely hire a pro.

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Old 01-25-2011, 11:40 AM   #4
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Copper Flex Gas Line Corrosion


Ayuh,... I'd just wipe it off, 'n See how bad it might be...
It appears to dip abit right there, so it coulda gotten wet, 'n corroded slightly...

You already have a brass valve between the iron pipe, 'n the copper tubing...
I really Doubt it's dissimilar metals corrosion...
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Old 01-25-2011, 11:40 AM   #5
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Copper Flex Gas Line Corrosion


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Thanks Brad. Yeah I figured it doesn't look good....hopefully there's a licensed gas installer that can give some input.

Let me add that I don't plan on trying to fix this myself...I would definitely hire a pro.
Yeah there are a couple here. Look up NHMaster. He's the most knowledgeable on gas service I think. He'll also appreciate that you plan to hire a licensed professional. Good luck.
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Old 01-25-2011, 11:54 AM   #6
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Copper Flex Gas Line Corrosion


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You already have a brass valve between the iron pipe, 'n the copper tubing...
I really Doubt it's dissimilar metals corrosion...
Bondo, correct me if I'm wrong... although brass and copper can be connected without problems of galvanic corrosion, there's still no insulating layer separating the copper and galvanized.
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Old 01-25-2011, 12:08 PM   #7
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Copper Flex Gas Line Corrosion


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there's still no insulating layer separating the copper and galvanized.
Ayuh,... It's my understanding, the Brass makes the difference...
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Old 01-25-2011, 12:09 PM   #8
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Copper Flex Gas Line Corrosion


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Ayuh,... I'd just wipe it off, 'n See how bad it might be...
It appears to dip abit right there, so it coulda gotten wet, 'n corroded slightly...

You already have a brass valve between the iron pipe, 'n the copper tubing...
I really Doubt it's dissimilar metals corrosion...
Good point about it getting wet, it is directly below some water pipes.
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Old 01-25-2011, 12:55 PM   #9
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Copper Flex Gas Line Corrosion


When I install gas lines. I spray soap on the fittings for leaks. If the soap is left on the copper It will turn it this color. Looks like the line has been wet. It should cause no problems. I see it all the time
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