Model PGR-2, Pilot Operated Pressure Reducing Gas Regulator; 3/4" Line Size; Stainless Steel Body And Cover Dome; Sa Trim: 316SST Trim With Bc Seat And Diaphragm,;Pilot Has Bc Ball (For Spring Range 90-200 316SST Ball), Neoprene (Bc);Diaphragm, Stabilizer Has Tfe Seat, Neoprene (Bc) Diaphragm; NPT Threaded End Connections; 90 - 200 PSIG Range Spring; Remote Sensing, Stainless Steel Fittings And Tubing; Opt-86: System Supply Gauge For Outlet Of Stabilizer; Opt-56: Special Cleaning Per Spec #S-1542