Model PGR-1 Rev A Pilot Operated Pressure Reducing Gas Regulator; 1" Line Size; WCB Steel Body And Cover Dome; SB Trim: 316L Stainless Steel Trim, BUNA-N Seat, BUNA-N Diaphragm, PTFE Static Seal, BUNA-N O-Ring Dynamic Seal, BUNA-N Pilot Ball (For 90-200 PSIG Spring Range 316 Stainless Steel Ball) And Diaphragm; NPT End Connections; 1 - 5 PSIG Range Spring; Brass Fittings, Copper Tubing For Self Contained Sensing; OPT-86: System Supply Gauge For Stabilizer Outlet