Union, Application Air, Non-Potable Water, Fitting Side A Connection Type Cup, Fitting Side B Connection Type Cup, Fitting Side A Copper Tube Size 2 1/2 in, Fitting Side B Copper Tube Size 2 1/2 in, Fitting Material Cast Copper, Fitting Side A Tube Outer Diameter 2 5/8 in, Fitting Side B Tube Outer Diameter 2 5/8 in, Maximum Operating Pressure 336 psi @ 100 Degrees F, Maximum Operating Temperature 400 Degrees F, Specific Fitting Shape Straight Union