Model 1000HP Rev A Pressure Reducing Regulator For Standard Service; 1" Line Size, OPT-27: Viscous Jet; Carbon Steel Body With Ductile Iron Spring Chamber; S2 Trim: 316 Stainless Steel Cylinder, 416 Stainless Steel Plug With Metal Seat, 302 Stainless Steel Diaphragm; OPT-30: Mates With ASME 150 Raised Face Flanges; 50-70 PSIG Range Spring