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What is a water filled rubber dam?
In water-filled rubber dams water pressure is created in the bladder is created to the principle of communicating vessels as a water column in a regulating shaft connected with the inside of the bladder by a pipeline (inlet/outlet pipe). The height of the water column in the regulating shaft determines the internal pressure and thus the height of the inflated bladder.
How does it work?
The water bag – and thus also the bladder – are filled by one or more filling pump(s). The water is taken from the supply shaft which is generally connected with the upstream water by one or more pipes.
The bladder is inflated by feeding water into the regulating shaft.
As soon as the pressure inside the bladder exceeds the sum of external forces (bladder weight and water load), the bladder starts to prop up. The inflated bladder retains the water in the retention area.
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