supply and delivery of different items for maintenance of state owned major rli scheme under gazole (a-m) sub-division within malda-i(a-m) division under non-plan maintenance. supply and delivery of different items for maintenance of state owned major rli scheme under gazole (a-m) sub-division within malda-i (a-m) division under non-plan maintenance. , supply and delivery , shaft of dpf water pump with nut (pump size:150x 150, head-18m, rpm-1500) shaft material shall conform to en08, shaft shall be heat treated at the place where bearing are mounted as per approved sample by eic , 3/8 graphite square gland packing constructed from high tensile strength ptef, gland packing shall conform to is:4687/1995. make: champion(model no.3116/2222/2224/6100 or other)/hindustan composites ltd / aesseal or equivalent reputed make. , 150 mm dia. c.i tail piece, one end flanged(23mm flange thickness), drilled as per is:6392(table-17) and other end grooved, overall length(175+/-15) mm with 7 nos. groove. material shall be cast iron conforming to grand fg 200 of is 210. one coat of black japan (type-b) conforming to is:341/1973. casting shall have <12.5 micron surface. , ci non return valve flanged ends & swing type with side by pass arrangement conforming to is:5312 (part-i/2004 with latest ammendments) , 150 mm dia (table-17) rubber insertion(for raised surface of flange as per is-6392) should have fabric insertion in two piece, the thickness will be 3mm & will have a minimum bearing load of 120n / sq. cm as per is:638/1979 & 1969/1968 with latest revision and amendments of following dimensions rubber inserstion 5mm thick with proper reinforcement 2 ply conforming to i.s 638/79 with isi mark with latest amendment. , gi nut & bolt with washer(m12 x 65 mm) is:1363(part i & 3/1992 of product grade-c , gi nut & bolt with washer(m16 x 65 mm) is:1363(part i & 3/1992 of product grade-c