Abstract: System for creating a liquid motion in a pool comprising: a means for introducing intermittently a gas into the liquid a gas flow means adapted for increasing the pressure of the gas, said increase resulting in gas flow and a control means for controlling the flow of the gas at the end opening of the end piping assembly at least in function of the height of the liquid.
Abstract: The wave making device comprises a caisson connected to an air blower and to a control valve mechanism comprising an exhaust valve adapted to move between a closed position and an open position, and a system adapted to move the exhaust valve and to maintain said exhaust valve into said position. The control valve mechanism is adapted to ensure continuously an air pressure within the caisson at least equal to the atmospheric pressure.
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