Test Cap Application Air Potable Water Compatible Copper Tube Size 2 in Compatible Tube Outer Diameter 2 1/8 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 Alloy C12200 Minimum Operating Temperature 20 Degrees F Resistance Properties Dezincification-Resistant