Adapter, Application Air, Gases, Potable Water, Fitting Side A Connection Type FTG, Fitting Side B Connection Type FNPT, Fitting Side A Copper Tube Size 1 1/4 in, Fitting Material Wrot Copper, Fitting Side B Pipe Size 1 1/4 in, Fitting Side A Tube Outer Diameter 1 3/8 in, Maximum Operating Pressure 351 psi @ 200 Degrees F, Maximum Operating Temperature 400 Degrees F, Specific Fitting Shape Straight Adapter