Model PGR-1; SALES PILOT KIT FOR PRODUCT CODE: PGC-5SA7-4MT000J0A;Pilot Operated Pressure Reducing Gas Regulator; 4" Size; 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;