A64-3BS7-1A000000B

Model "PBE-H", Revision B, Pressure Build Regulator & Economizer For Cryogenic Service (Requires Cryogenic Lubricants During Assembly); 1/2" Line Size; Bronze Body & Spring Chamber, Opt-55: Oxygen Cleaning Per Cashco Specification S-1134; B9s Trim: Brass With Tfe Seat, SST Diaphragm; NPT Threaded End Connections; 2-15 PSI Range Spring; Stainless Steel Vented Spring Chamber Plug