Backflow Preventer Repair Kit, For Use With 3 909 NRS, Mfr. No. 21/2 909 NRS, Includes Check Disc Cover, Diaphragm, Lubricant, Piston Seal, RV Disc Assembly, Sleeve O-Ring, Upper and Lower Check Stem O-Ring. This item has been restricted from sale in the following state (s): []