I need to replace the white PVC air lines in my shop and would like to use copper tubing this time around. When I went to the Borg, I noticed that they had two types of tubing; L & M with the L looking like it had a little thicker wall. The lines will see 150 psi at times although I normally keep them at 125 psi. My question is this; is the “L” type ok to use or is there another type better suited. Also, are the standard Borg copper fittings ok to use? They only had the one (thin) type available.
Thanks