Model 1000HP Rev A Pressure Reducing Regulator For Standard Service; 1" Line Size, Gaseous Jet; Carbon Steel Body With Carbon Steel Spring Chamber; S40V Trim: 316 Stainless Steel Cylinder And Plug With Fluorocarbon Elastomer (FKM) Seat, Fluorocarbon Elastomer (FKM) Diaphragm; NPT End Connections; 65-130 PSIG Range Spring; OPT-25: 1/4" NPT Spring Chamber Vent Tap; OPT-26: 1/4" NPT Body Tap (No Pressure Gauge Included); OPT-40: Construction Per NACE Standard MR0175