procurement of spare for mil make valves installed at boiler of 1 x 500mw unit, sgtps, mppgcl, birsinghpur , sh attemperation common block valve, tag no. sd 35, model no. 38-414x1, serial no. 252447 size 150nb class 2500 , gland packing ring set , 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 , 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 , 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 , control valve tag no: lo30, sl no.-260311,38-21126, 1.5 ansi # 300, cv-25, act size: 11 , gland packing , body gasket , seat ring , control valve tag no: lo11a & lo11b, sl no.-260320 & 260321, 37-21125, 1.5 ansi # 300, cv-10, act size: 11-6a1 , gland packing , body gasket , seat ring , control valve tag no: lo23a & lo23b, sl no.-260316 & 260317, 37-21125, 1.5 ansi # 300, cv-10, act size: 11-6a1 , gland packing , body gasket , seat ring , control valve tag no: ho40, sl no.-260312, 38-21126, 3 ansi # 300, cv-110, act size: 18 , gland packing , body gasket , seat ring , control valve tag no: ho11a & ho11b, sl no.-260322 & 260323, 37-21125, 3 ansi # 300, cv-31, act size: 136a2 , gland packing , body gasket , seat ring , control valve tag no: ho33a & ho33b, sl no.-260318 & 260319, 38-21125, 3 ansi # 300, cv-31, act size: 136a2 , gland packing , body gasket , seat ring , control valve tag no: os33a & os33b, sl no.-260307 & 260308, 37-21125, 3 ansi # 300, cv-65, act size: 116a2 , gland packing , body gasket , seat ring , control valve tag no: os11a & os11b, sl no.-260324 & 260325, 38-21125, 3 ansi # 300, cv-65, act size: 136a2 , gland packing , body gasket , seat ring , control valve tag no: cw60a & cw60b, sl no.-260309 & 260310, 38-21125, 1 ansi # 300, cv-3.8, act size: 116a1 , body gasket , seat ring , control valve tag no: ho45 sl no.-260313 38-21126, 2 ansi # 300, cv-46, act size: 13 , gland packing , body gasket , seat ring , control valve tag no: os59a to os59d, sl no.-260267 to 260270, 38-21125, 1 ansi # 300, cv-16, act size: 13 , body gasket , control valve tag no: ho60a to ho60d, sl no.-260243 to 260246, 38-21126, 1 ansi # 300, cv-9, act size: 11 , body gasket , control valve tag no: os70a & os70b, sl no.-260314 & 260315, 38-21125, 1 ansi # 300, cv-16, act size: 13 , gland packing , seat ring , control valve tag no: sd-55 sl no.-252444, 68-41134, 3 ansi # 2500, cv-30, act size: 20 piston , gland packing , body gasket , seat gasket , plug stem s/a , seat ring , control valve tag no: sd-56 sl no.-252446, 90-41134, 3 ansi # 2500, cv-30, act size: electrical actuator , gland packing , body gasket , seat gasket , plug stem s/a , seat ring , control valve tag no: sd-57 sl no.-252445, 38-41114, 2 ansi # 2500, cv-12, act size:18-8a , gland packing , body gasket , seat gasket , plug stem s/a , seat ring , cage