procurement of spares for mil make valves installed at boiler of 1x500 mw unit no. 5 at sgtps mppgcl birsinghpur. , sh attemperation common block valve, tag no. sd 35,model no. 38-414x1, serial no. 252447 size 150nb class 2500 , plug stem s/a , gland packing ring set , body gasket , seal ring/pressure seal , seat ring , seat ring gasket , sh attemperation branch line block valve, tag no. sd 36 to 39,model no. 38-412x1, serial no. 252448 to 252451 size 100nb class 2500 , plug stem s/a , gland packing ring set , body gasket , seal ring/pressure seal , seat ring , seat ring gasket , cage , sh attemperation branch line control valve, tag no. sd 40 to 43,model no. 38-41238, serial no. 252452 to 252455 size 100nb class 2500 , plug stem s/a , gland packing ring set , body gasket , seal ring/pressure seal , seat ring , seat ring gasket , cage , rh attemperation common block valve, tag no. sd 44,model no. 38-412x1, serial no. 252456 size 80nb class 1500 , plug stem s/a , gland packing ring set , body gasket , seal ring/pressure seal , seat ring , seat ring gasket , rh attemperation branch line block valve, tag no. sd 45 to 48,model no. 38-412x1, serial no. 252457 to 252460 size 65nb class 1500 , plug stem s/a , gland packing ring set , body gasket , seal ring/pressure seal , seat ring , seat ring gasket , cage , rh attemperation branch line control valve, tag no. sd 49 to 52,model no. 38-41231, serial no. 252461 to 252464 size 65nb class 1500 , plug stem s/a , gland packing ring set , body gasket , seal ring/pressure seal , seat ring , seat ring gasket , cage , atomizing steam valve tag no. os60m, model no. 38-21125, serial no. 260298, size 25nb class 300 end- 300rf flange , body sub assembly without actuator & accessories