Reducing Adapter, Tube Fitting Material Wrot Copper, Fitting Connection Type C x FNPT, Tube Size 2 in, Pipe Size - Pipe Fitting 1-1/2 in, Outside Dia. 2-1/8 in, Max. Pressure 364 psi @ 100 Degrees F, Temp. Range -20 Degrees to 400 Degrees F, Standards ASME/ANSI B 16.22