NPTF Threaded Flange, Smooth Flat Face (no O-Ring Groove), Carbon Steel, 3/4\” NPTF x 3/4\” Code 61, no Bolts or O-Rings Included – W104-12-12 Connection Type: Female Face Style: Flat Face Fitting Angle: Straight Flange Code: Code 61 Flange Size: 3/4 in Side 1 Size: 3/4 in Side 1 Type: NPT