Groco Pipe to Hose Bronze FittingGroco bronze Pipe to hose fitting. Standard Flow - the hose ID is the same as the pipe size (ie: PTH-750 has 3/4" NPT pipe thread and accepts 3/4" ID hose). Sizes from 1/2" to 5"; UL Listed 647B; Specifications: PTH-5062; Thread NPT: 1/2"; Hose ID: 1/2 or 5/8"; A: 2.7; B: 1.8; PTH-750; Thread NPT: 3/4"; Hose ID: 3/4"; A: 2.39; B: 1.38; PTH-1000 Thread NPT: 1"; Hose ID: 1"; A: 2.48; B: 1.38; ; PTH-1250 Thread NPT: 1-1/4"; Hose ID: 1-1/4"; A: 2.65; B: 1.55; ; PTH-1500 Thread NPT: 1-1/2"; Hose ID: 1-1/2"; A: 3; B: 1.9; ;