Tri-clamp fittings are the gold standard in professional breweries and they've been widely adopted in homebrewing as T.C. kettles, fermenters, and pumps become more widely available. Tri-clamp fittings allow you to make a sanitary connection without any nooks or crannies for contaminants to hide in and they can be cleaned in place.
Use this barbed fitting to connect 1/2" ID tubing to a 1.5" tri-clamp fitting.
1.5" tri-clamp
1/2" OD barb
3/4" long barbed section
1-1/8" long stem
Made from 304 stainless steel