Model PGR-1 Pilot Operated Pressure Reducing Gas Regulator; 2" Size; Sales Kit For Main Valve/Pilot/Stabilizer; Wcb Steel 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;