MODEL "DA8" SALES KIT FOR PRODUCT CODE: D8B-1P27-2T10F000E; DIFFERENTIAL BACK PRESSURE REGULATOR (SERIES VIII)-PDBPV BODY SIZE 3",STANDARD DIAPHRAGM CONSTRUCTION; DUCTILE IRON BODY & SPRING CHAMBER,1/8" PETCOCK VENT; 17-4 PH SST TRIM, 316L SST CAGE, PA SEAT, BC DIAPHRAGM, NBR STATIC SEAL, SST/TFE U-CUP DYNAMIC SEAL;