8D8-A4TK-MAC

Model 123 Rev C Back Pressure Regulator, OPT-45: PTFE Gaskets; 1-1/2" Line Size; Sales Kit A; Stainless Steel Body With Stainless Steel Spring Chamber; S40T Trim: 316 Stainless Steel With PTFE Seat, Fluorocarbon Elastomer (FKM) Diaphragm; OPT-55: Cleaned For Oxygen Service Per Cashco Specification S-1134