- Thrust gates of a small brook or reservoir
- Water gates which open in the horizontal direction
- When the distance between a water gate and a winch is far apart
Features:
- Not a up-and-down movement method, but a left-and-light
movement method
- It is possible to locate the places of water gates with the
installation of a gauge.
- It is possible to do long-distance operation and control by
connecting many spindles (using spindle and large rollers)