procurement of spares for maxflow pump model 149hpb5 as per nit , item description , bearing housing ( d ) , ci , part no . mf149b502 ( d ) , stage bush ( bronze ) , part no . mf149b520 , bearing housing ( s ) , ci , part no . mf149b502 , sleeve nut ( s&d ) ( en-8 ) , part no . mf149b504 , bearing block ( d ) , ci , part no . mf149b507 , shaft , en-8 , part no . mf149b508 , balancing valve ( bronze ) , part no . mf149b509 , guide vanes , ci , part no . mf149b513 , stage , ci , part no . mf149b515 , disk seat ( bronze ) , part no . mf149b519 , sleeve key ( steel ) , part no . mf149b521 , impeller key ( steel ) , part no . mf149b525 , splash ring , rubber , part no . mf149b529 , bearing block ( s ) , ci , part no . mf149b530 , balancing valve bush , ( bronze ) , part no . mf149b534 , stage ring ( big ) , ci , part no . mf149b535 , discharge bush , bronze , part no . mf149b536 , shaft sleeve ( s ) , ci , part no . mf149b542 , impeller ( ci ) , part no . mf149b511 , stage ring ( s ) , ci , part no . mf149b543 , stage ring ( d ) , ci , part no . mf149b544 , shaft sleeve ( d ) , ci part no . mf149b545