whats the tell tale way to identify it…??
A) it’s square
B) it’s never strait
C) it’s covered by the foundation/slab
D) it’s double walled
pick the 2 best answers.
The correct answer is B.
Type K is for underground use.
Type L is for indoor plumbing.
Type M is lighter and thinner, it is also used indoors.
Type DWV is used for drain, waste and vent piping.
Type M is used for heat systems
any of them (exept dwv) can be used for heat. pottable water should be “L” because of p.s.i… heat sys. usualy run at 12-20 p.s.i., and pottable at 40-60 p.s.i. working preasure and (code max) 80p.s.i. static… or so i’ve been told. not trying to be a know it all, just pointing out that type M isn’t the only type usable for heat, it’s less expensive, and meets the requirements, and your right it’s “usualy” your typical heat pipe.
Jay as soon as I can find it I will post it, about what a overheated system does to type L pipe.
o.k. cool. i’ve read it both ways, and seen it both ways, i’d like to see your reference. by the way, hows business?? i see we’re competition, i like that. what’s you area?