Re: Type M or Type L????
Posted by e-plumber on March 15, 2004 at 07:07:59:
In response to Re: Type M or Type L????
: Should type M or L copper tubing be used to connect cast iron radiators into a hot water system?

It's used to be that Type L was only used for domestic water and Type M was used for only heating. Now Type M is used for both.

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