Model 1000HP Rev A Pressure Reducing Regulator, Grafoil Gaskets (OPT-46G); 1" Line Size, Liquid Jet; Sales Kit B; Carbon Steel Body With Ductile Iron Spring Chamber; S1 Trim: 316 Stainless Steel Cylinder And Plug With Metal Seat, 302 Stainless Steel Diaphragm; NPT End Connections; 10-40 PSIG Range Spring