DWV Test Cap Application Air Potable Water Compatible Copper Tube Size 1 5/8 in Compatible Tube Outer Diameter 1 5/8 in Fitting Connection Type Cup Fitting Material Wrot Copper Maximum Operating Temperature 400 Degrees F Specific Fitting Shape Test Cap Precleaned Not Pre-Cleaned Standards ASME B16.23 ASME B16.29 Minimum Operating Temperature 20 Degrees F Overall Length 1 21/32 in