supply of various internal spares required for repair and maintenance of butterfly valves gearbox in city area under ae maint ww citys section , internal sprares , sector gear for 450 mm bfv gearbox , pinion wheel for 450 mm bfv gearbox , worm shaft for 450 mm bfv gearbox , spur gear for 450 mm bfv gearbox , pinion for 600 mm dia bfv gearbox (rd 70) , spur gear driving pinion 600 mm bfv gearbox (rd 70) , spur gear inter pinion 600 mm bfv gearbox (rd 70) , sector for 600 mm dia. bfv gearbox(rd 70) , worm wheel for 600 mm bfv gearbox (rd 70) , small pinion gear for 750 mm bfv gearbox , small spur gear for 750 mm bfv gearbox , sector gear for 750 mm bfv gearbox , worm gear for 750 mm bfv gearbox , pinion (small) gear for 900 mm bfv gearbox , pinion (big) gear for 900 mm bfv gearbox , spur gear (small) for 900 mm bfv gearbox , spur gear (big)for 900 mm bfv gearbox , sector gear for 900 mm bfv gearbox , worm gear for 900 mm bfv gearbox , sector gear for rd 400 gearbox , spur (big) gear for rd 400 gearbox , spur (small) gear for rd 400 gearbox , pinion(big) for rd 400 gearbox , pinion(small) for rd 400 gearbox , worm shaft for rd 400 gearbox