Model 1000HP Rev A Pressure Reducing Regulator With TFE/Silica Gaskets (Option-45); 1" Line Size, Gaseous Jet; Bronze Body With Bronze Spring Chamber; BK Trim: Brass Cylinder And Plug With Fluorocarbon Elastomer (FKM) Seat, Fluorocarbon Elastomer (FKM) Diaphragm; NPT End Connections; 100-300 PSIG Range Spring; OPT-55: Cleaned For Oxygen Service Per Cashco Specification S-1134