Model "DA1" SALES KIT FOR PRODUCT CODE: D16-4PD7-4A100000E; Pressure Reducing Regulator (Series I); Body Size 1",Standard Diaphragm Construction; Carbon Steel Body, Ductile Iron Spring Chamber; 17-4ph SST Trim, 316l SST Cage, Gf-Tfe Seat, Fkm Diaphragm,;Fkm Static Seal, SST/Tfe U-Cup Dynamic Seal;