Model "DA1" SALES KIT FOR PRODUCT CODE: D19-AM97-1R10M000E; Pressure Reducing Regulator (Series I); Body Size 2",Standard Diaphragm Construction; Cf3m Body, 316l SST Spring Chamber; Monel M Trim, V-Tfe Seat, Fk Diaphragm,;Fk Static Seal, SST/Tfe U-Cup Dynamic Seal; Opt-55: Cleaned For Oxygen Service Per Spec #S-1134