Model DL Rev B Pressure Reducing Regulator For General Service; 1-1/2" Line Size; Bronze Body And Spring Chamber; B5 Trim: Brass With PTFE Seat And Phosphor Bronze Diaphragm; NPT Threaded End Connections; 30-80 PSIG Range Spring; Polyethylene Vented Spring Chamber Plug; Opt-55: Oxygen Cleaning Per Cashco Specification S-1134