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All this is not taking into account the backpressure from the position
of your bladder relative to the pressure around you and at the output
end of the valve, and the cracking presure of the check valves in the
line. You would be amazed at how hard it is to seal any mechanism . I
can feel the line and the catheter blow up every time, and luckily, mine
has a tight grip. The twist offs in the checks tend to give a little as
well. Barry  (EE )has a shrink wrap over them in his mechanism, I leave
mine exposed per Navy spec so I can change out the checks easily or
clean them with vinegar.


tgunther@co*.co* wrote:
> 
> <<   Polygrip with a with an O2 on demand mask and surgical tubing.  
Shave
> first, then apply.  Get the picture?    >>
> 
> Oh man, I don't even wanna go there   :-)    This sounds worse than what we
men
> have to do (either in preparation, or in ribbing from non-connected friends)!
> 
> Tod
> 
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