bids are invited for restoration of generator bus duct air pressurization pressure switch for air dryer of generator bus duct , 12.5- 250 mm wc pressure switch for air dryer unit , compressor pressure switch for air dryer of generator bus duct , gravity type after filter element for air dryer of generator bus duct , 15mm auto drain valve for air dryer of generator bus duct , 6-8 mesh activated carbon for air dryer unit of generator bus duct , activated alumina for air dryer of generator bus duct , ceramic ball for air dryer , control valve , 15mm safety valve for air dryer of generator bus duct , 15 mm non return valve for air dryer of generator bus duct , 6 nb solenoid valve for air dryer of generator bus duct ,15nb solenoid valve for air dryer of 250 mw generatorbus duct , 4 inch pressure guage for air dryer ofgenerator bus duct , 25 nb pressure regulator for airdryer of generator bus duct , pressure regulator , filterregulator , window type annunciator for electrical panel ofair dryer of generator bus duct , 25mm ball valve for airdryer of generator bus duct , candle type pre filter elementfor air dryer of generator bus duct , servicing of airpressurization equipment total quantity : 181