Features The 316 stainless steel construction for this GRAINGER APPROVED coupling has a higher nickel content, as well as molybdenum, for better corrosion resistance. Compatible with Schedule 80 stainless steel pipe For use in air, water, and natural gas applications Specific Fitting Shape / Coupling Fitting Connection Type / FNPT Pipe Fitting Material / 316 Stainless Steel Max. Steam Pressure / 2500 psi@350 Degrees F Standards / Material Conforms To ASTM-A-182, Threads Conform To ANSI/ASME B1.20.1 meets ASME B16.11