supply and installation of different missing items of existing fire fighting system at north bengal medical college and hospital in the district of darjeeling.- 1 supply & installation of gm oblique type single headed landing valve with 80 mm inlet and 63 mm outlet gm instantaneous male coupling with rubber cap and chain conforming to is : 5290 including matching flanges, gasket, nuts and bolts complete 2 supply & installationof gunmetal branch pipe with 20 mm nozzel conforming to is: 903 cmplete 3 supply & installation of 63 mm dia rubberized reinforced rubber line hose pipe in 15 m length conforming to is:636 type ii isi marked with gunmetal male and female instantaneous coupling conforming to is 903 wounded with 18 swg copper wire complete 4 supplying , fitting and fixing in position fibre glass panes of approved quality with resin , nail clip etc as per is :12866-1989(in all floors for internal wall & upto 6 m height for external wall) (c) 2.0 mm thick ( 3.36kg/sq.m)