Fig No U488, 4 in. PVC DWV Plug Male Iron Pipe Thread (MIPT) 4 Inch 1
Fig No U4818, 4 in. PVC DWV Plug Male Iron Pipe Thread (MIPT). Smooth interior finish for reduced friction and material buildup. Do not test or use with compressed air or other gases. Male National Pipe Taper (NPT) threads for connecting to a female threaded pipe.