MODEL "DA6" DOME LOADED BACK PRESSURE REGULATOR (SERIES VI)-PLBPV BODY SIZE 1/2",STANDARD DIAPHRAGM CONSTRUCTION; CARBON STEEL BODY, DUCTILE IRON LOADING CHAMBER; 17-4PH SST TRIM, 316L SST CAGE, PA SEAT, BC DIAPHRAGM NBR STATIC SEAL, SST/TFE U-CUP DYNAMIC SEAL; NPT END CONNECTION; INTERNAL SENSING, REVERSE - FLOW TO OPEN DIRECTION;