procurement of spares for fly ash system of ahp at unit no. 3 and 4, sgtps, mppgcl, birsinghpur , spares for nuva diffuser feeder 12”x10” , diffuser mounting plenum assembly, moc- ss:304 , seat for nuva diffuser feeder 12”x10”, moc: high chromium white cast iron, heattreated to 600bhn , disc for nuva diffuser feeder 12”x10”, moc: high chromium white cast iron, heat treated to 600bhn , 12”x10” nuva diffuser feeder inside lever, moc: durite 350bhn , shaft with key, moc- steel , spares for 18” swing gate v/v of transfer hopper , shaft with key, moc: steel , seat & disc (complete set)for 18” swing disc gate valve assembly (transfer hopper)material:-disc : ms is 2062, seat : alloy cast steel hardness 250 to 300 bhn , pivot ball assembly of transfer hopper, moc- steel , allen bolt (size-10 x 35 mm), moc- en 24 , outside lever, moc- cast steel , center bolt with bush, moc-en 8 , spares for 2.5”, 2 way vent valve , two way vent valve complete assembly, material casing: alloy cast iron-hardness-180-200bhn valve seat & disc- high chrome/steel ceramic seating face , valve seat for two way vent valve, moc: steel with ceramic seating face , valve disc for two way vent valve, moc: steel with ceramic seating face , shaft with key, moc- cast steel , inside lever, moc- cast steel , roll pin for 2 way vent valve, moc:en8 , roll pin for 2 way vent valve, moc:en8 spares for esp diffuser feeder 12”x6” , valve seat for esp diffuser 12”x6”, moc- durite 350bhn , valve disc for esp duffuser12”x6”, moc- durite 350bhn , pivot ball assembly,moc- cast steel , center bolt assembly (with double nut),moc- en 8 , spares for ash intake valve , ash intake valve complete assembly with actuator moc of major element of valve: hopper inlet body & intake valve: grey iron g3 bhn-180/equivalent body nuvaloy: durite bhn-350 valve seat & disc :n-8 bhn-400 shaft :en-8 spring:hardened tempered spring steel lever: cast steel roll pin:en-42/equivalent removable seat :n-8 bhn-400/equivalent air cylinder:2.5”*6 stoke standard, make : eastern pneumatic/equivalent gasket :rubberized asbestos all fasteners yoke: steel , valve seat for ash intake valve, moc-n-8 bhn-400 , valve disc for ash intake valve, moc-n-8 bhn-400 , spares for air intake valve , air intake valve assembly, moc-body- bhn-180, compression spring- hardened tempered spring steel, valve disc- galvanized steel, adjusting nut with bolt- en 8 , disc for air intake valve, moc: galvanized steel , compression spring for air intake valve, moc: hardened tempered spring steel