Temporary inflatable barriers that are used to isolate part of a river in order to perform work without the presence of water.
They create a water barrier through their own weight. They function by means of water.
Principal characteristic: they don't require any building work for their anchorage.
They are light, quick and safe, and they can be re-used many times. They are ideal for canal maintenance, and they are indispensable in all those cases where neither earth walls nor vertical sheet walls can be installed.