bids are invited for reverse osmosis and demineralized plant spares sand media such as pebble and gravel and sand , activated carbon 900 iv , pressure gauge 0 to 7 kg , pressure gauge 0 to 20 kg , cartridge filter 4 inch x 10 inch , rotameter panel mount 500 lph , ro membrane 4 inch x 40 inch , conductivity sensor , cation resin , anion resin , float sensor , mix bed , ferrule 1 by 2 x 6 mm female thread , ferrule 1 by 2 x 6 mm male thread , pu tube 100 mtr , ferrule 12 mm x 6 mm male thread , upvc union 1inch , upvc union 1 by 2 inch , teflon tape , sintex tank 2 mtr x 1 mtr x 1 by 2 mtr tank capacity 1000 ltr , upvc pipe and fitting total quantity : 388