bids are invited for underground water drainage system and other water source 200 mm 4 kg pressure isi pvc pipe 6 mtr , 3 inch lapeta pipe , 1 inch garden pipe , 5000 ltr water tank , fogger black , disc filter 40 m3 hr , ventury injector assembly 2 inch , header assembly 3 inch , hydro cyclone filter 50 m3 hr , pp ball valve 63 mm , air release valve 1 inch , non return valve 3 inch , pressure gauge dial 2 inch glycerine , lldpe plain lateral cl ii 16 mm , emitting pipe 16 mm 2 lph 30 cm , rubber grommet 16 mm , barbed start connector take off 16 mm , barbed joiner 16 mm , barbed end cap 16 mm , pvc pipe 63 mm 4 kg cm , flush valve 63 mm , pp ball valve 63 mm , pp ball valve 75 mm , borewell 950ft approx , tenching charge area 14 hec 35 acre