Quote Originally Posted by Hummer View Post
Back when I was operating concrete plants, air systems controlled valves and rams for aggregate gates, chutes, bin vibrators and more. All we used was 1/2" iron pipe lines. It's the capacity of the air compressor that delivered the power. BTW, I strongly advise against using PVC lines as they can be very dangerous when they fatigue and rupture. Do a little research before going that route.
We've used 1/2 CPVC for air line in the shop for more than 20 years without a failure. Our shop air is at around 135 psi, and we drain the system every couple of days to get the water out. That being said, we don't use a lot of air, except for the brake bleeders, occasional use of the blast cabinet or a DA, and the bike lifts. Compressor is a 5 horse 80 gallon, running on 240.