Model DA1 Rev E Pressure Reducing Regulator; 2" Line Size; Carbon Steel Body With Carbon Steel Spring Chamber; PC 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, GF-TFE Seat, Fluorocarbon Diaphragm, Fluorocarbon Static Seal, Fluorocarbon O-Ring Dynamic Seal; OPT-30: Mates With ASME 300 Raised Face Flanges; 80-225 PSIG Range Spring, OPT-80: High Outlet Pressure Construction; Internal Sensing