Posted 7/24/2014 07:42 (#3983379 - in reply to #3982845) Subject: RE: Shop air hose size
sc ia
3/4 line is big enough unless there will be multiple people running air tools at the same time. I've checked the pressure drop from one side of my shop to the other and there's only about a 1 lb drop when running an air tool. 1/2 inch hose and big couplers are mandatory for the big impact guns.