Tender For tender for supply of 100nb and 150nb ash discharge valves and spares c c - complete assembly of 100nb ash , spare part of disc for 100nb ash discharge valve , spare part of seat ring for 100nb ash discharge valve , complete assembly of 150nb adv ( fal) , spare part of disc for 150nb ash discharge valve (fal) , spare part of seat ring for 150nb ash discharge valve (fal)