Model DL Rev B Pressure Reducing Regulator For General Service; 2" Line Size; Bronze Body And Spring Chamber; S9 Trim: 316 Stainless Steel With PTFE Seat And TFE Coated 302 Stainless Steel Diaphragm; NPT Threaded End Connections; 70-150 PSIG Range Spring; Polyethylene Vented Spring Chamber Plug; Opt-87: With 1/8" NPT Inlet And Outlet Gauge Ports And Plugs; Opt-55: Oxygen Cleaning Per Cashco Specification S-1134