Collapsible tubes are very important because they can be used to study a lot of biological structures, such as human blood vessels and trachea. They are usually simplified with the “Starling resistor model”, that consists of a collapsible tube clamped between two rigid supports and inserted in a room that can be pressurized. Internally there is a flow rate. Under certain circumstances, they can generate self-excited oscillations, where the shape of the tube and the fluid dynamics variables are changing cyclically. In the experimental setup there was a flow loop driven by a centrifugal pump. Two constant level reservoir, kept at different height, ensured to have flow rate inside the collapsible tube, that was located inside a pressurized chamber filled with fluid.