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		I inflated the ODC a couple days back and I realize the change in air temps over night (down around 32º) will affect the internal pressure. Do the valves (Boston or Boston-like) need a certain pressure inside the tube to remain closed? I'm thinking maybe they do, but don't know for sure. Any advise?
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		I wouldn't think so.  Once close, they are closed, but I am no expert on boston valves.
As far as size, I would say, the air is still there, it was compressed, and when warm, inflates.   Isn't that how it works?
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		I would say yes they do, but the amount of pressure necessary is next to nothing. Having any kind of air in your tube should keep them closed.
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		The valves are probably not leaking it's the change in temperature that makes the tube look flat. Put it out in the sun and watch out as it will inflate pretty fast.  Your tube will do the same thing when you first put it in cold water.
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		Many things experience shrinkage in cold water.
Ref: Seinfeld Show
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		Boston valves have an outer cap besides the inner membrane that partially retains air while inflating. You must have the outer cap on snugly to keep air in. If you are doing that already, then I don't know whats happening.
Porta
[quote NewRiverRat]I inflated the ODC a couple days back and I realize the change in air temps over night (down around 32º) will affect the internal pressure. Do the valves (Boston or Boston-like) need a certain pressure inside the tube to remain closed? I'm thinking maybe they do, but don't know for sure. Any advise?[/quote]
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		I seem to have leakage worse than shrinkage. I've ordered new valves, if that's not it, I'm checking for pinholes.
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		Oh man....I hate that!   I hope it is just the valves......
Although a pin hole would be easier to fix, they are a pain to find sometimes
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		[cool][#0000ff]LloydE finally gave up trying to find the pinhole leak in his Fish Cat.  He brought it over to my place and I mixed up some super sudsing shampoo in warm water.  Aired the bladder up to the max and started spreading the sudsy solution over the surface.  It took a few minutes but I finally found a spot that began making a bubble...larger and larger.  It was a super tiny hole but enough to cause the tube to lose air during a day on the water.[/#0000ff]
[#0000ff][/#0000ff] 
[#0000ff]Lloyd had challenged me.  He did not think I could find the leak.  He had already replaced valves.  My record is still intact.  Never found a leak I couldn't find.  Huh?[/#0000ff]
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		You Guys and Gals are funny....keep it up, it makes the graveyard shifts go by faster.
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