supply of procurement of set of six items for high pressure suction valve assembly.procurement of set of six items for high pressure suction valve assembly.,set of six items for high pressure suction valve assembly as per annexure given below for gd ma ke air compressor model wlna9bb of hhp diesel locomotives, note:- the firm has to issue coc (or) wtc along with supply. (1)hp valve cover gasket to gd pt.no.226wln715 - 01 no. (2)unloader spring lower to gd pt.no.7 8a124 - 01 no. (3) o ring for upper plunger to gd pt.no.25bc118 01 no. (4)unloader spring upper to gd pt.no. 78a16 -01 no. (5)gasket for unloader cap to gd pt.no. 25bc295 - 01 no. (6) gasket for unloader to gd pt.no.20 7wln715-01 no. [ warranty period: 30 months after the date of delivery ] ]