tender for supply of various sizes butterfly valves required for replacement of various daily operated valves in city area under ae (maint) ww citys section. , supplying, loading, transportingon site, unloading butterfly valves of pn1.0 conforming to awwac-504 in sgi- is 1865 (grade 500/7) material with appurtenances and flange adapters, nuts, bolts, washers, packings etc. stacking the same as directed on site for following diameters. (manually operated). the flange adapter used here conforms to awwac-219. note :butterfly valves, flange adapters and all other materials shall be supplied as per the acceptance criteria of mcgm as given in specification. , 450 mm butterfly valve , 600 mm butterfly valve