Model 1000HP-1+6 Rev B Pressure Reducing Regulator For Standard Service; Single Diaphragm; Graphite/NBR Gaskets; Includes Closing Cap; 1" Line Size, Gaseous Jet; Sales Kit B; Carbon Steel Body With Carbon Steel Spring Chamber; S3N Trim: 316 Stainless Steel Cylinder And Plug With BUNA-N (NBR) Seat, Neoprene (BC) Diaphragm; OPT-30: Mates With ASME 300 Raised Face Flanges