Model PGR-1 Pilot Operated Pressure Reducing Gas Regulator; 2" Size; SST Body And Cover Dome; Sa Trim: 316l SST Trim, Bc Seat, Bc Diaphragm;V-Tfe Static Seal, Bc O-Ring Dynamic Seal,;Bc Pilot Ball (For 90-200 PSIG Spring Range 316 SST Ball) & Diaphragm; 300 Lb Raised Face Flanges; 40 - 100 PSIG Range Spring; Self Contained Sensing, Stainless Steel Fittings And Tubing