Nipple, Application Air, Gas, Potable Water, Finish/Coating Galvanized, Fitting Compatibility Class 150, Gravity Flow No, Inside Diameter 2 15/32 in, Manufacture Location Globally Sourced, Material Steel, Material Grade Grade B, Maximum Operating Pressure 945 psi @ 650 Degrees F, Maximum Operating Temperature 600 Degrees F, Maximum Steam Pressure 945 psi @ 650 Degrees F, Metal Pipe Construction Welded, Minimum Operating Temperature -20 Degrees F, Nominal Pipe Size 2 1/2 in WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)