ok now me an a friend are arguing about air line... he said Ex. if u run 3/8 vlaves and 3/8 lines it will b the same speed as if 3/8 valves and 1/2 lines... or bigger. i said that 3/8 and1/2 will b faster then 3/8 and 3/8 who is right?:welder:
air line is measured in outside diameter (od). valves are measured in orifice diameter. You want to match up the orifice diameter with the inside diameter of the air line. 1/2 inch airline has an inside diameter of 3/8 of an inch. Therefore, a 3/8 valve is optimized (faster) with 1/2 airline. You win.