What we have here is the primary inflation valve from one of our float tubes. Note the hole in the polyurethane bladder where it's supposed to be mounted.
So ya', I had an interesting outing on Monday. The upside, I'm posting this and I didn't get all that wet. The sucker simply fell off of the bladder. It didn't come loose, it flat out - fell off. The only thing that kept all the air from escaping all at once, was the remaining pressure pressing the valve base between the skin and bladder.
Another fine example of American ( Boise, Idaho ) engineering and manufacturing prowess.
Yes, that tube always has an inflatable life vest stored in the upper backrest pocket.
Other than that, it was a pretty good day.
Dave