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Old 05-20-2018, 10:09 PM   #10
Arthurc's Avatar
City: Seattle
Country: USA
Vessel Name: Sea Bear
Vessel Model: Kadey-Krogen 54
Join Date: Sep 2016
Posts: 502
Thatís exactly what I was thinking, I have no idea what purpose this vent serves.
After more troubleshooting it is indeed creating a vacuum and pulling air in, not pushing air out.
Based on that I struggle to see how a low flow or air in the system could cause the noise so reliably. Or... could the vent just be bad and if the seal failed it would naturally do this as the water creates a Venturi effect and sucks in air?
Noise goes away when I put my finger over the vent, and water flow is the same no matter what I do.

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