Attn. HVAC pros..........Is someone "blowing sunshine up my skirt"?

[dirtydeed]

Type K is also required (here at least) for all underground water service (municipal water supply). Additionally, all fittings must be mechanical (no soldering) for underground portion.

Those rolls of 3/4" K-type are pretty heavy.

The OD is the same. It's the wall thickness that is different.

see here:

 

[Runs With Scissors]

Thanks for all the help fellas.

I'm hoping to get her all done in the next few days

I definitely have learned quite a bit.

After breaking out my "good calipers" and reading about the different types of fittings, (while I was not drinking hahahaha) it appears that I have Type L line set and Type L fittings.

I thought they should be "a lot" thicker, but apparently there is only about a .013 difference between M and L.

K fittings would be/are the thickest, but my line set they sent with it is "L" according to the "engineers toolbox", so unless the "pro" that is helping me says I need K, I will run with this.