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   >  Someone wrote:-
   > The ACSC/DCSC has a AGA/Interspiro FFM without valves in the oral-nasal
cup.
   > How prone this mask is to fogging is unknown to me.

   >A.Appleyard wrote :
   > I got hold of an ex-Russian gas mask where the airflow is so arranged that
   >when the user breathes in, a sharp directed current of the air coming into
the
   >mask blows straight onto the eye-windows; it has no inner mouth-and-nose
   >compartment. That cuts fogging down much compared with English-made gas
masks.
   >Another feature is that instead of straps it is attached to a complete head
   >hood of thin rubber. This seems more comfortable to me.

Hi !

Israeli navy uses a mask that controls exhaled air flow.
The exhaled air flow across the face plate and defog 
the mask.

Regards

Erez


 Erez Boym                                                 o
 CMas DM, Deep Air,MIX Gas      * Welcome to the      *   oO
 26 Pinsker St', Haifa, Israel  * religion of diving *  OOo
 EMail - dp18382@el*.co*.il*                       _____ o
 Tel   - 972 4 316610                             (_/-\_)
         972 4 222044

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