Model 1000HP Rev A Pressure Reducing Regulator For Standard Service; 1-1/2" Line Size, Gaseous Jet; Stainless Steel Body With Stainless Steel Spring Chamber; S2 Trim: 316 Stainless Steel Cylinder, 416 Stainless Steel Plug With Metal Seat, 302 Stainless Steel Diaphragm; NPT End Connections; 30-75 PSIG Range Spring; OPT-12+14: One-Step Reduced Orifice And Integral Seat