Model D Rev D Pressure Reducing Regulator For General Service; 1" Line Size; Sales Kit A; S9 Trim: 316 Stainless Steel With PTFE Seat And TFE Coated 302 Stainless Steel Diaphragm; 10-40 PSI Range Spring; Polyethylene Vented Spring Chamber Plug; Opt-55: Oxygen Cleaning Per Cashco Specification S-1134