Welded Rotating Female UnionDescription Truelok Ordering Number Size I Inch G Hex Flat X Inch Working Pressure psig W-RU-FF-4FS-4FS-1.71 1/4 .18 3/4 1.71 5100 W-RU-FF-8FS-8FS-1.84 1/2 .40 1 1/16 1.84 3500