Model "DL" Pressure Reducing Regulator For Cryogenic Service (Requires Cryogenic Lubricants During Assembly); 1-1/2" Size; Cf8m Body & Spring Chamber; S36 Trim: 316SST With Tfe Seat,302SST Diaphragm; Npt Screwed; 70-150 PSIG Range Spring; Opt-25S: Stainless Steel Vented Spring Chamber Plug; Opt-55: Cleaned For Oxygen Service Per Spec #S-1134