supply of procurement of n1 reducing valve overhauling kit, , n1 reducing valve overhauling kit consisting of 5 items (i) o ring 3/4 inch to wabco part no. 531868/ faiveley p art no. 502702000 to rdso drg no. skdp-3031(item no.4), qty/set -02 nos. (ii) o ring 3/4 inch to wabco part no. 564056/ faiv eley part no. 502709000 to rdso drg no. skdp-3031 (item no.16), qty/set -01 no. (iii) diaphragm to wabco part no. 526346/ f aiveley part no. 502704000 to rdso drg no. skdp 3052, qty/set -01 no. (iv) gasket to wabco part no. 558515/ faiveley part n o.523703000, qty/set -02 nos. (v) dirt protector to wabco part no. 564855/faiveley part no. 523701000, qty/set -01 no. [ warr anty period: 30 months after the date of delivery ] ]