Reducing Coupling Body Material 316 Stainless Steel Class 150 Pipe Size 1-1/4 in x 3/8 In. Connection Type FNPT Max Pressure 300 psi Max Steam Pressure 150 psi Outside Dia 2-3/32 In. Standards Material Conforms To ASTM-A-351 Threads Conform To ANSME B1.20.1 Meets MSS-SP-114 Class 150 Pressure Ratings