procurement of critical spares of mellcon make air dryer ( job no . csi-46 ) for instrument air system installed at ash handling plant at 2x600 mw , sstpp , mppgcl , dongalia , critical spares of mellcon make air dryer ( job no . csi-46 ) for instrument air system installed at ash handling plant at 2x600 mw , sstpp ( as per schedule ) , after filter element part no . csl-46afe , filter candle , ball valve screwed flange type part no . csl46-bv12 , ball valve screwed type part no . csl46-bv35 , blower centrifugal , to blow air part no . csl46-b , auto drain valve part no . csl46-ecdt , four way valve part no . csl-46-fwv12 , globe valve part no . csl46-gb , non return valve part no . csl46-nrv , needle valve part no . csl46-nv1-4 , needle valve part no . csl46-nv5-7 , pressure switch part no . csl46-ps2 t11300 , pressure regulator part no . csl46-pr , proximity switch part no . csl46-px1-4 , pre filter element part no . csl 46-pfe , filter , strainer part no . csl46-st , solenoid valve air , 5 / 2 way type part no . csl46-sv1a , b , solenoid valve air 2 / 2 way type part no . csl46-sv2a , b , safety valve part no . csl46-sfv1-2 , silencer part no . csl46-s , over load relay part no . csl46-olr , indicating lamp part no . csl-46-li-21 , control relay part no . csl46-cr14-15 , control relay on part no . csl46-cr1-13 , pressure switch part no . csl46-ps2 , pi800 , hooter-pneumatic horn part no . csl46-ht , online electronic dew point meter part no . csl46-di , pre filter complete body part no . csl46-pf , after filter complete body part no . csl46-af