There's different fittings for HVLP!!?? Oh geeze! How come I'm always the last one to know about these things?

Seriously, I run two air regulators, one on the wall coming into the booth and one at the gun.
I also (bad bad girl) run PVC pipe from the compressor up to the shop. Our compressor is located about 200 or so feet away from our shop. We have had a few occassions with PVC fittings that shattered. But in 10 years it has happened about 6 times. In the shop itself, I run hoses.
I have 2 stage compressor with an 80 gal tank and run about 80 lbs through the lines to the shop.
And I use the same gun fittings that I have been using for over 20 years.