Febco: 2 1/2" - First or Second Check Rubber Parts for an 805 / 805D / 805YD Double Check / 806YD Double Check Detector Assembly {OR} 825 / 825D / 825YD Reduce Pressure Zone / 826YD Reduced Pressure Detector Assembly
Kit Includes: Check Disc, Disc Holder O-Ring, and Cover O-Ring
