Test Cap, Application Air, Potable Water, Compatible Copper Tube Size 1 1/4 in, Compatible Tube Outer Diameter 1 3/8 in, Fitting Connection Type Cup, Fitting Material Wrot Copper, Maximum Operating Pressure 5 psi, Maximum Operating Temperature 400 Degrees F, Specific Fitting Shape Test Cap, Standards ASME B16.29, ASTM B75, Material Grade C12200, Minimum Operating Temperature 20 Degrees F, Resistance Properties Dezincification-Resistant