Model DA1 Rev E Pressure Reducing Regulator; 1" Line Size; Stainless Steel Body With Stainless Steel Spring Chamber; P3 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, CTFE Seat, Neoprene Diaphragm, BUNA-N Static Seal, Stainless Steel/PTFE U-Cup Dynamic Seal; OPT-30: Mates With ASME 300 Raised Face Flanges; 70-200 PSIG Range Spring; Internal Sensing