Nipple Application Air Natural Gas Non-Potable Water Propane Steam Fitting Compatibility Schedule 80 Gravity Flow No Inside Diameter 1 9/16 in Material Stainless Steel Material Grade 304 Maximum Operating Pressure 1639 psi @ 650 Degrees F Maximum Operating Temperature 650 Degrees F Metal Pipe Construction Seamless Minimum Operating Temperature -20 Degrees F Nominal Pipe Size 1 1/2 in Outside Diameter 1 7/8 in Overall Length 4 in Schedule Schedule 80