Nipple Application Air Natural Gas Non-Potable Water Oil Steam Fitting Compatibility Class 125 Inside Diameter 31/64 in Material Brass Material Grade C38500 Maximum Operating Pressure 1200 psi Maximum Operating Temperature 250 Degrees F Maximum Steam Pressure 1200 psi Metal Pipe Construction Seamless Minimum Operating Temperature -65 Degrees F Nominal Pipe Size 3/8 in Overall Length 1 1/2 in