Anvil 0312822166 Metal Pipe Union Straight, 1 1 2 in x 1 1 2 in, Threaded x Threaded, Class 150, 300 psi @ 150° F, Malleable Iron, Black 4FB32 Overall Length 48 1 2 in Overall Length 48 1 2 in Range 328 Degrees to 1994 Degrees F Minimum Temperature Measurement 328 Degrees F Maximum Temperature Measurement 1 Material Malleable Iron Fitting Shape Union Color Black Connector Type Union Class Class 150 For Pipe Schedule Schedule 40 Maximum Operating Pressure 300 psi @ 150° F Fitting Side 1 Female 1 1 2 in NPT Threaded Fitting Side 2 Female 1 1 2 in NPT Threaded For Media Type Air ASTM A105 Country of Origin United States