Reducing Adapter Application Air Gases Potable Water Fitting Side A Connection Type Cup Fitting Side B Connection Type FNPT Fitting Side A Copper Tube Size 3/4 in Fitting Material Wrot Copper Fitting Side B Pipe Size 3/4 in Fitting Side A Tube Outer Diameter 7/8 in Maximum Operating Pressure 582 psi @ 100 Degrees F Maximum Operating Temperature 400 Degrees F Specific Fitting Shape Reducing Adapter