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Old 03-19-2009, 01:32 PM   #1
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aluminum vs copper for compression fitting


In general is there a difference in using 1/4 inch copper or aluminum tube for a gas compression fitting? does the aluminum sqeeze to make a better flare? or does it matter?
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Old 03-19-2009, 02:11 PM   #2
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aluminum vs copper for compression fitting


Are you asking about a compression OR flare type fitting...they are different and are not used interchangeably. What's your application?

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Old 03-19-2009, 02:14 PM   #3
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aluminum vs copper for compression fitting


compression fitting
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Old 03-19-2009, 02:16 PM   #4
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aluminum vs copper for compression fitting


What is your application... . what are you using it for...it's purpose... not what fitting.
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Old 03-19-2009, 02:44 PM   #5
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aluminum vs copper for compression fitting


I just mean in general terms... is the aluminum used because it is cheaper or easier to use. I think water heaters use aluminum
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Old 03-19-2009, 03:49 PM   #6
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aluminum vs copper for compression fitting


Aluminum is used, because the manufacturer of the unit doesn't know if its going to be installed in a certified acid free area system. Or an area that the gas still contains acid vapor.

The Hydrogen sulfide acid, in natural gas eats copper but has little to no effect on aluminum.
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Old 03-19-2009, 04:09 PM   #7
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aluminum vs copper for compression fitting


Plus, its also cheaper then copper.
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Old 03-19-2009, 04:14 PM   #8
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aluminum vs copper for compression fitting


Quote:
Originally Posted by beenthere View Post
Aluminum is used, because the manufacturer of the unit doesn't know if its going to be installed in a certified acid free area system. Or an area that the gas still contains acid vapor.

The Hydrogen sulfide acid, in natural gas eats copper but has little to no effect on aluminum.
That's why a lot of buried copper lines (In chases) were over sized by one size.

but Now i only run black pipe inside for appliance supply lines. I terminate them with a stainless flex connector.

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