bids are invited for return valve isolator auxiliary contactor cast steel foot valve,size 6inch,body pressure 900psi,seat pressure 750psi,thread fitted ph.bronze seat ,minimum weight 60kg,with mfg tc. , 3.3kv vulcanising rubber tape 6inchx10mtr per roll , cast steel non return valve with bypass,size 6inch, body pressure 900psi,seat pressure 750psi,thread fitted ph.bronze seat ,minimum weight 120kg,with mfg tc. , isolator on off,cb 200d 1 , potential transformer,eea0014025 , auxiliary contactor, fg110c , tyre coupling complete set, f 140 , tyre coupling complete set,f 120 , earth leakage relay with cbct,12v,1 to 750ma procurement foot valve vulcanising rubber tape non total quantity : 523