Model "1000HP" Pressure Reducing Regulator,Tfe/Sil. Gaskets; 1/2" Size,Gaseous Jet; Cf8m Body & Spring Chamber (Opt-36), Cryogenic Construction;Opt-55: Cleaned For Oxygen Service Per Spec #S-1134; S36 Trim: 316SST Cylinder & Plug With Tfe Seat,302SST Diaphragm; Opt-30: 150 Lb Raised Face Flanges; 120-300 PSIG SST Range Spring