krazykuda said Grainger 6AFJ5 = 3/4" pipe thread with 1" nipple GRAINGER APPROVED Hose Barb,1 In Barb,3/4 In MNPT,Brass - 6AFJ5|6AFJ5 - Grainger 6AFH7 = 3/8" pipe thread with 5/8" nipple... GRAINGER APPROVED Hose Barb,5/8 In Barb,3/8 In MNPT,Brass - 6AFH7|6AFH7 - Grainger View attachment 1715162837 View attachment 1715162838 Click to expand...