[pnutzhome]

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?
thx

 

[RippySkippy]

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

 

[pnutzhome]

compression fitting

 

[Bob Mariani]

What is your application... . what are you using it for...it's purpose... not what fitting.

 

[pnutzhome]

I just mean in general terms... is the aluminum used because it is cheaper or easier to use. I think water heaters use aluminum

 

[beenthere]

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.

 

[beenthere]

Plus, its also cheaper then copper.

 

[hvaclover]

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.