Model DA1 Rev E Pressure Reducing Regulator; 1-1/4" Line Size; Carbon Steel Body With Carbon Steel Spring Chamber; PB 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, Polyurethane Seat, Fluorocarbon Diaphragm, Fluorocarbon Static Seal, Stainless Steel/PTFE U-Cup Dynamic Seal; NPT End Connections; 100-350 PSIG Range Spring, OPT-80: High Outlet Pressure Construction; Internal Sensing