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     I purchased a small valve for just that purpose.  I'm not sure that 
     that's what it was made for; I suspect that it was a purge valve kit 
     for a mask.  It's a two part "flapper" valve. You cut, or punch out a 
     small round hole in the top of the hood (SCARY!!) and insert one half 
     of the valve body, then snap the other piece onto it.  I made it 
     permanent with a drop of Aquaseal cement.  The valve itself is a low 
     tech device; just the two halves of the valve housing and a little 
     rubber one way flapper valve.
     
     By the way, with proper technique, you don't need this little 
     accessory, although it makes life a bit easier.  You can avoid 
     inflating your hood by exhaling through your mouth instead of your 
     nose. (when I exhale through my nose the breath bubbles out of the top 
     of my mask where it interfaces with the hood. Some gets inside).
     
     The other technique involves "burping" the hood, but that takes one or 
     two hands, and usually involves getting some cold water intrusion.
     
     I'm happy with the valve solution, although cutting a hole through a 
     new $1600.00 dry suit isn't my idea of fun.

Andy Cohen
______________________________ Reply Separator _________________________________
How did you make a "little valve " for the hood, please?
     
harve
     

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