supply of overhauling kit for unloader valve , overhauling kit for unloader valve(ii97710) of m/s. knorr bremse make computer controlled b rake system for wap-7/wag-9 locomotives. kit consisting of 04 items as follows. 1) compression spring as per m/s. kbi part no. c150925. qty/set. = 01 no. 2) piston assembly as per m/s. kbi part no. 1175554. qty/s et. = 01 no. 3) o ring as per m/s. kbi part no. c150951. qty/set. = 01 no. 4) gasket as per m/s. kbi part no. c150952. qty/set. = 01 no. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]