corrigendum - supply and fixing of vacuum operated gas feeder chlorinator at 2mgd filter plant , supply and fixing of vacuum operated gas feeder chlorinator at 2mgd filter plant , cylinder/toner mounted vacuum operated , chlorine gas filter cs-1 suitable for , container auxiliary isolating valve to , tonner clamp for valve , flexible coil connection tube annealed , self contained oxygen breathing apparatu , tonner key , tonner nut , union nut 5/16: nb , compressor ring , lead washer , chlorine pressure gauge for header line . , supply and fixing od chlorine header , supply and fixing od chlorine solution , installation charge for chlorinator , g . s . t . as per government rules