bids are invited for flange isolator on off,3.3kv,400amps complete , fixed contact, cb200b1 , moving contact,cb200b2 , potential transformer,eea0014025 , sensitive earth leakage relay with cbct, 750ma , cast steel non return valve with bypass,size 6inch, body pressure 500psi, , cast steel sluice valve,size 6inch,body pressure 900psi,seat pressure 750psi , cast steel sluice valve,size 4inch,body pressure 900psi,seat pressure 750psi , cast steel foot valve,size 6inch,body pressure 900psi,seat pressure 750psi , cast steel foot valve,size 8inch,body pressure 1000psi,seat pressure 750psi , m.s flange, threaded,150mm,plain face,12mm thick,as per is 6392 1971 ,15 bar pressure procurement of isolator fixed and moving contact valves ms total quantity : 116