Procurement Opportunity: Overhauling Kit for Check Valve to KBI Part No. I90476 for LHB Coaches consisting of 3 items. (1) O RING PART NO. K3581 QTY/SET-1 NO. (2) O RING PART NO. K4140 QTY/SET-3 NOS. (3) VALVE SEALING DISC PART NO. 468676 QTY/SET-1 NO. Mat. Spec.:- RDSO/2011/CG-04, Rev-4 with latest revision and amendment. Gurrantee/Warranty as per clause no. 5 of RDSO/2011/CG-04, Rev-4 Inspection as per clause no. 15 of RDSO/2011/CG-04, Rev-4 in Assam