drw 2022 - urgent works to mitigate water scarcity - provision of chlorinators at manathavady, thirunelli, krishnagiri, kaniyambetta, padinjarathara, athirattukunnu, kabanigiri, nerapathu and thomattuchaal wtps supply and erection of chlorinators , supplying erecting and commissioning of gravity feed wall mount type chlorinator of capacity 1 to 5 kg / hr with primary and secondary gas filter control valves , mixing chamber , pressure gauge with necessary connections required length of best quality teflon piping for gas flow from cylinder to chlorinator along with brass connector and compression ring etc. suitable pvc pipe and fittings for water inlet and out let connections. the supplied items and erections shall conform with relevent is standards . also necessary protection kit with mask and other essential items including test kits shall be provided . also the unit shall be maintained for 1 years