Model HP Rev A Pressure Reducing Regulator, PTFE/FKM Gaskets (Opt-45); 3/4" Line Size; Sales Kit A; Carbon Steel Body With Carbon Steel Spring Chamber; S1 Trim: 316 Stainless Steel Metal Seat, 302 Stainless Steel Diaphragm; 10-40 PSIG Range Spring; OPT-1+6: Differental Construction With Closing Cap