procurement of cast steel valves , globe valves and check valves in ash handling plant at 2x600mw at sstpp , mppgcl , dongalia , cast steel valves , globe valves and check valves in ash handling plant , cast steel gate valve:manual operated , max . operating pressure: 10 kg/cm2fluid handled-water & air , screwed connection , class-150 , size ( nb ) -65 , cast steel gate valve:manual operated , max . operating pressure: 8 kg/cm2fluid handled-water & air , flanged connection , class-150 , size ( nb ) -80 , cast steel gate valve:manual operated , max . operating pressure: 8 kg/cm2fluid handled-water , air & slurry , flanged connection , class-150 , size ( nb ) -100 , cast steel globe valve:manual operated , max . operating pressure: 8 kg/cm2fluid handled-water , flanged connection , class-150 , size ( nb ) -100 , cast steel check valve:manual operated , max . operating pressure: 10 kg/cm2fluid handled- air & water , screwed connection , class-150 , size ( nb ) -65 , cast steel check valve:manual operated , max . operating pressure: 10 kg/cm2fluid handled- water & slurry , flanged connection , class-150 , size ( nb ) -100 , cast steel check valve:manual operated , max . operating pressure: 14 kg/cm2fluid handled- water , flanged connection , class-150 , size ( nb ) -300 , cast steel check valve:manual operated , max . operating pressure: 14 kg/cm2fluid handled- water , flanged connection , class-150 , size ( nb ) -350