Sun Sep 13, 2015 7:14 am
I don't have a photo on hand but it's easy. The end port opposite the orifice adjustment (slot with the 3 dots around the hole) is the HP port, all the rest are low pressure. Also, the HP port is the modern standard 7/16 so any LP hose you try to put in it will just fall out. The rest of the ports are the modern standard 3/8.
Herman