Nipple Application Air Natural Gas Oil Potable Water Steam Fitting Compatibility Class 300 Gravity Flow No Inside Diameter 1/2 in Material Red Brass Material Grade ASTM B43 Maximum Operating Pressure 267 psi @ 450 Degrees F Maximum Operating Temperature 400 Degrees F Maximum Steam Pressure 267 psi @ 450 Degrees F Metal Pipe Construction Seamless Minimum Operating Temperature -20 Degrees F Nominal Pipe Size 1/2 in Outside Diameter 27/32 in Overall Length 1 1/2 in