Model PGR-1 Pilot Operated Pressure Reducing Gas Regulator; 2" Size; Wcb Steel Body And Cover Dome; Sb Trim: 316l SST Trim, Nbr Seat, Nbr Diaphragm;V-Tfe Static Seal, Nbr O-Ring Dynamic Seal,;Nbr Pilot Ball (For 90-200 PSIG Spring Range 316SST Ball) & Diaphragm; 150 Lb Raised Face Flanges; 3 - 10 PSIG Range Spring; External Sensing, Stainless Steel Fittings And Tubing