Model 1000HP Rev A Pressure Reducing Regulator For Oxygen Service; 2" Line Size, Gaseous Jet; Stainless Steel Body And Stainless Steel Spring Chamber; S1 Trim: 316 Stainless Steel Cylinder And Plug With Metal Seat, 302 Stainless Steel Diaphragm; NPT End Connections; 50-150 PSIG Range Spring; OPT-55: Cleaned For Oxygen Service Per Cashco Specification S-1134