I am wondering if anyone can provide any insight into an issue I'm dealing with. I have a KF25 bellow hose (corrugated) that is 1 meter long which is mounted to a blower fan in suction (about 57 CFM, 5inH2O pressure)to one end and the other end is fixed through a KF25 coupling. The fan is 24 volts and after applying within 15 - 20 volts the entire bellow hose starts to resonate giving off a high frequency noise that is extremely loud. I've isolated the issue by only having the blower fan and tube alone and the problem persists, so I can conclude that the vibration is induced from the air flow within the tube and the tube itself. Any suggestions to addressing this would be appreciated. If any additional information is needed please let me know.
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