Model 1000HP Rev A Pressure Reducing Regulator With TFE/Silica Gaskets (Option-45); 3/4" Line Size, Gaseous Jet; Sales Kit A; Bronze Body With Bronze Spring Chamber; B5 Trim: Brass Cylinder And Plug With PTFE Seat, Phosphor Bronze Diaphragm; NPT End Connections; 40-100 PSIG Range Spring; OPT-55: Cleaned For Oxygen Service Per Cashco Specification S-1134