Set of Overhauling kit1 for 24A Double check valve consisting of 4 items as given: 1 O Ring FTRTIPL Pt. No 502708000 Qty./ Set: 02 Nos. 2 O Ring FTRTIPL Pt. No 702705000 Qty./ Set: 02 Nos. 3 O Ring FTRTIPL Pt. No 502702000 Qty./ Set: 03 Nos 4 Float FTRTIPL Pt. No NA Qty./ Set: 01 No.