This Check Kit Includes The Parts Necessary to Repair or Replace Either The First or Second Check Module of an 8 And 10 Inch In-Line Double Check Assembly, The First or Second Check of an 8 Inch N or Z Pattern Double Check Assembly, The First Check of an 8 or 10 Inch In-Line Double Check Detector Assembly, The Second Check of an 8 or 10 Inch In-Line Reduced Pressure Zone Assembly, The First Check of an 8 in N or Z Pattern Double Check Detector Assembly or The Second Check of an 8 Inch N or Z Pattern Reduced Pressure Zone Assembly. Kit Includes Check Module, Mounting Hardware, Cover O-Ring, Bearing, And Bearing Socket. All Parts Are Genuine And Original to The Valve. | Febco | 905481