supply of overhauling kit for 1.5 kg/cm2 duplex check valve to part no.1.3.1902 of m/s knorr bremse india pvt ltd., consisting of 4 itemsoverhauling kit for 1.5 kg/cm2 duplex check valve to part no.1.3.1902 of m/s knorr bremse india pvt ltd., consisting of 4 items,overhauling kit for 1.5 kg/cm2 duplex check valve to part no.1.3.1902 of m/s knorr bremse india pvt ltd., consisting of 4 items as follows :- 1) sealing ring 453890-2 n os., 2) valve head a48128-2 nos., 3) o - ring a27763/26-2 nos., 4) locking ring 466031- 2 nos. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] amm/tsd/avd, sr tamil nadu 346.00 set