Model 1000HP Rev A Pressure Reducing Regulator, Grafoil Gaskets (Opt-46G); 1" Line Size, Gaseous Jet; Sales Kit B; Carbon Steel Body With Carbon Steel Spring Chamber; S1 Trim: 316 Stainless Steel Cylinder And Plug With Metal Seat, 302 Stainless Steel Diaphragm; OPT-30: Mates With ASME 300 Raised Face Flanges; 100-300 PSIG Range Spring; OPT-15: Stellited Seat Surface (Includes OPT-14: Integral Seat)