Set of Overhauling kit for 24A Double check valve consisting of 4 items conforming to RDSO Drawing No. SKDP- 4161 Alt- 1 and RDSO Specification No. MP. 0. 01. 00. 15 ( Rev- 03 ) April 2024. 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.