Model DL Rev B Pressure Reducing Regulator, OPT-45: Cryogenic Construction; 1-1/2" Line Size; Stainless Steel Body And Spring Chamber; S36 Trim: 316 Stainless Steel With PTFE Seat, 302 Stainless Steel Diaphragm; OPT-34: ASME 300 RF Flanged End Connections (14" Face - Face); 70-150 PSIG Range Spring; OPT-25S: Stainless Steel Spring Chamber Vented Plug; OPT-56: Cleaned For Non-Oxygen Service Per Cashco Specification S-1542