Nipple Application Air Natural Gas Non-Potable Water Propane Steam Fitting Compatibility Schedule 40 Gravity Flow No Inside Diameter 1 3/8 in Material Stainless Steel Material Grade 304 Maximum Operating Pressure 150 psi Maximum Operating Temperature 450 Degrees F Metal Pipe Construction Welded Minimum Operating Temperature -60 Degrees F Nominal Pipe Size 1 1/4 in Outside Diameter 1 11/16 in Overall Length 8 in Pipe Weld Type Continuous Weld Schedule Schedule 40