Adapter Application Air Gases Potable Water Fitting Side A Connection Type FTG Fitting Side B Connection Type MNPT Fitting Side A Copper Tube Size 1/2 in Fitting Material Wrot Copper Fitting Side B Pipe Size 1/2 in Fitting Side A Tube Outer Diameter 5/8 in Fitting Side B Tube Outer Diameter 5/8 in Maximum Operating Pressure 577 psi @ 200 Degrees F Maximum Operating Temperature 400 Degrees F Specific Fitting Shape Straight Adapter