Model 1000HP Rev A Cryogenic Pressure Reducing Regulator; 1/2" Line Size, Gaseous Jet; Sales Kit A; Bronze Body With Spring Chamber, OPT-5: Cryogenic Construction, OPT-55: Cleaned For Oxygen Service Per Cashco Specification S-1134; B5 Trim: Brass With PTFE Seat, Phosphor Bronze Diaphragm; NPT End Connections; 40-80 PSIG Stainless Steel Range Spring