procurement of spares of fly ash system for unit no. 1 to 4 ph i and ii, sgtps, mppgcl, birsinghpur. , spares for nuva diffuser feeder 12”x10” , diffuser mounting plenum assembly for nuva diffuser feeder 12”x10” , seat for nuva diffuser feeder 12”x10” , disc for nuva feeder diffuser feeder 12”x10” , inside lever for 12”x10” nuva diffuser feeder , shaft with key for nuva diffuser feeder 12”x10” , 25 nb diaphragm operated pressure valve 2 way model no. kpl/25d of eastern pneumatics , 40 nb diaphragm operated pressure valve 2 way model no. kpl/40d of eastern pneumatics , diaphragm assembly set with spring for 25 nb dia diaphragm valve , diaphragm assembly set with spring for 40 nb dia diaphragm valve , pneumatic cylinder size 6 bore x 7 stroke assembly , body fluidizer(fluidizing pad) 4” wide 48” long with imported ss element & ms bolt for nuva diffuser feeder , adjustable compression spring for disc of nuva feeder diffuser feeder 12”x10” , spares for 18” swing gate v/v of transfer hopper , shaft with key for transfer hopper , seat & disc for 18” transfer hopper valve assembly , pivot ball assembly of transfer hopper , outside lever , inside lever , supporting (reinforcement) disc , gun metal nrv 25 mm , body casing for 18” swing gate v/v , pneumaticcylinder size 4 bore x 6-3/8 stroke assembly , bearing housing (support plate) with oil seal for 18” swing gate v/vof transfer hopper , s.s. stud bolt 12x50 with double nut , s.s. stud bolt 12x75 with double nut , spares for 2.5”, 2 way vent valve , two way vent valve complete assembly , valve seat for two way vent valve , valve discfor two way vent valve , shaft with key for 2 way vent valve , 2.5” vent v/v inside lever , roll pin for 2 way vent valve. , pneumatic cylinder size 2.5 bore x 4 stroke assembly , body casing , flow regulator (size-1/4) for pneumatic cylinder (2.5”x4)