procurement of spare parts of m/s mil make s/h attemperation r/h attemperation, steam coil air pre-heater (scaph) control valve and block valve for boiler at unit no. 1 of 2x 600 mw units, sstpp, mppgcl, dongalia , superheater spray station block valve [ tag no. sd-1, s.n. 118265, model no. 414x1, 8, ansi#2500, cv-425, act size: 16 double acting+hw , gland packing set , body gasket , seat gasket , plug stem s/a , seat ring , cage , seal ring , tec ring gasket with backup ring , flat spring , body stud & nut set ( 1 set consists of 8 number) , superheater spray station control valve[ tag no.( sd-2,3,4 &5), s.n.- 118267 to 118274, 38-414x1, 6, ansi#2500, cv-260, act size:18-8a] , gland packing set , body gasket , seat gasket , plug stem s/a , seat ring , cage , seal ring , yoke gasket , body stud & nut set ( 1 set consists of 8 number) , superheater spray station control valve [ tag no. (sd-6,7,8,9), s.n. 118280, 38-41421, 4, ansi#2500, cv-140, act size:18-8a] , gland packing set , body gasket , seat gasket , plug stem s/a , seat ring , cage , seal ring , flat spring , yoke gasket , body stud & nut set ( 1 set consists of 8 number) , reheater spray station control valve[ tag no. (sd-11,12,13 &14), 38-412x1, s.n. 118289, 2, ansi#1500, cv-40, act size:13-6a2] , gland packing set , body gasket , seat gasket , plug stem s/a , seat ring , seal ring(set) , cage , yoke gasket , body stud & nut set ( 1 set consists of 8 number) , reheater spray station control valve[ tag no. (sd-15,16,17&18), 38-41121, s.n. 118299, 2, ansi#1500, cv-12, act size:15-6a3] , gland packing set , body gasket , seat gasket , plug stem s/a , seat ring , cage , yoke gasket , body stud & nut set ( 1 set consists of 8 number) , reheater spray station blockvalve[ tag no. (sd-10), s,n, 118283, 38-414x1, 3, ansi#1500, cv-95, act size:18-8a] , gland packing set , body gasket , seat gasket , plug stem s/a , seat ring , cage , seal ring , yoke gasket , body stud & nut set ( 1 set consists of 8 number) , steam coil air pre-heater (scaph) station control valve [ tag no. aasu-11, s.n. 124029, 38-41921, 8, asme-300, end-asme 300 bw, cv-400, act size:186a3] , gland packing set , body gasket , seat gasket , plug stem s/a , seat ring , flat spring , seal ring (set) , yoke gasket , cage , body stud & nut set ( 1 set consists of 8 number)