Model PGR-2, Pilot Operated Pressure Reducing Gas Regulator; 1" Line Size; Carbon Steel Body And Cover Dome; S5 Trim: 316SST Trim With Fkm Seat And Diaphragm,;Pilot Has Fkm Ball And Diaphram,;Stabilizer Has Fkm Seat And Diaphragm; NPT Threaded End Connections; 0.75" - 41" Wc Range Spring; Remote Sensing, Stainless Steel Fittings And Tubing