Nipple Application Air Natural Gas Non-Potable Water Propane Steam Finish/Coating Stainless Steel Fitting Compatibility Schedule 40 Gravity Flow No Inside Diameter 1 3/8 in Material Stainless Steel Material Grade 304 Maximum Operating Pressure 1268 psi @ 650 Degrees F Maximum Operating Temperature 650 Degrees F Metal Pipe Construction Welded Minimum Operating Temperature -20 Degrees F Nominal Pipe Size 1 1/4 in Outside Diameter 1 11/16 in Overall Length 1 3/8 in