Model DA5 Rev E Back Pressure Regulator; 3" Line Size; Bronze Body With Stainless Steel Spring Chamber; PD 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, GF-PTFE Seat, Fluorocarbon Diaphragm, Fluorocarbon Static Seal, Stainless Steel/PTFE U-Cup Dynamic Seal; OPT-30: ASME 150 Flat Face Flanged End Connections; 10-40 PSIG Range Spring; Internal Sensing