Types of copper supply lines


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Old 02-22-05, 09:30 AM
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Types of copper supply lines

Which copper supply lines are best? At HD I see types M and also something called rigid, which is Type L I think? Which is best? I do not mind paying a bit more for higher quality. This installation is part of a new basement with full bath.

thanks
 
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Old 02-22-05, 01:44 PM
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gtsayers

The three types of rigid copper are Type M, Type L and Type K. The Type referrs to the thickness with M being the thinnest. Flexible copper comes in Type L and K. Type K is the type used for underground service. All can be soldered, or you can use compression fittings on flexible copper and on Type M rigid. You cannot flare rigid but you can both types of flexible. I guess it's up to you if you want to sweat the joints in, or use compression and use a couple of wrenches. Hope this helps.

George
 
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Old 02-22-05, 01:52 PM
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Codes vary on what can be used for each application. I PERSONALLY use type "L" for any plumbing I do that is not underground. Good luck.
 
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Old 02-22-05, 01:54 PM
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I'll be sweating the fittings mostly, so I guess it does not matter much. Thanks for the insight. Had not thought about that. The only compression fittings are likely to be at the fixtures. So, I guess it is not a quality issue, merely an application issue.

I also came across this link:

http://www.keidel.com/mech/pvf/pipe-cu.htm

good info here.
 
 

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