Square Head Plug, Pipe Fitting Material Malleable Iron, Fitting Schedule/Class Class 150, Pipe Size - Pipe Fitting 3 in, Fitting Connection Type MNPT, Standards ASME B 16.3 and B 16.4, ASTM A-197, ASTM A47, FM Approved, UL Listed, Max. Pressure 300 psi@150 Degrees F, Saturated Steam Pressure 150 psi, Temp. Range -20 Degrees to 366 Degrees F, Plug Construction Cored. This item has been restricted from sale in the following state (s): []