CT Sean
Contributor
It also happens when you inflate the wing... a small amount of water will usually be sucked in through the mouthpiece due to a venturi effect of the air coming through the inflator.
I dive in fresh water most of the time, so I'm really bad at rinsing gear (i.e. never do it) and it's amazing how much water accumulates over the course of a bunch of dives!
Not sure that's accurate as that would imply that the inflator "air path" is open to external air/water/whatever the inflation valve is open. If this was the case air would bubble out of the inflator whenever the wing is inflated.