supply of overhauling kit for cock dh7.overhauling kit for cock dh7.,overhauling kit for cock dh7 to kbi part no. i88738 for air brake system of lhb coaches.consisting of 06 items. s.no., descri ption, kbi part no.,qty/set. (1) retaining ring, part no . 457709, qty/set =1 no. (2) knorrk-ring, part no. 462575, qty/set =2 nos. (3) o ring , part no. a47412,qty/set =1 no.(4) o-ring, part no .a95468, qty/set =1no. (5) o ring, part no. k4140, qty/set =3 nos. (6) valve seat bushing, p art no.c170298, qty/set =1 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 ] ]