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Old 07-30-2007, 06:14 PM   #1
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difference b/ween L (blue - expensive) and M (red - cheap) copper pipes


what is the difference in application ?

i am replacing my old galvanized steel radiator pipes with copper and was wondering if M will suffice. all that flows through is hot water.

thanks,

- a

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Old 07-30-2007, 06:44 PM   #2
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difference b/ween L (blue - expensive) and M (red - cheap) copper pipes


Type "M" is used for heating and type "L" is for potable water. The difference is wall thickness, "M" is thinner and is fine at reduced pressures (less than domestic street pressure). You can also get "BT" which is bending temper to use less fittings. If you think "L" is expensive price out "K".


Last edited by bigMikeB; 07-30-2007 at 06:46 PM.
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Old 07-30-2007, 09:05 PM   #3
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difference b/ween L (blue - expensive) and M (red - cheap) copper pipes


so you are saying that M will be fine for men (heating), correct ?

i am confused that potable water uses thicker pipe than is used for heating. i would think it is the other way around.
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Old 07-30-2007, 09:15 PM   #4
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difference b/ween L (blue - expensive) and M (red - cheap) copper pipes


that may read funny - i meant to write "suffice for ME" not "suffice for MEN"
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Old 07-31-2007, 06:28 PM   #5
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difference b/ween L (blue - expensive) and M (red - cheap) copper pipes


Quote:
Originally Posted by amakarevic View Post
so you are saying that M will be fine for men (heating), correct ?

i am confused that potable water uses thicker pipe than is used for heating. i would think it is the other way around.
Heating runs at much lower pressures than city water and the air and minerals are removed from heating water and a coating of iron oxide (the black sludge) coats the inside of the pipe which technically lubes the inside walls of the piping.
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