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Changes to Step #8

Edit by Guy Kuo

Edit approved by Guy Kuo

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[title] Expiratory Flutter Valves
[* red] Expiratory flow is through one way flutter valves. These screw onto the halo to formand create an airtight, penetration through the bag.
[* red] Expiratory flow is through one way flutter valves. These screw onto the halo to formand create an airtight, penetration through the bag.
[* black] Flutter valves are fashioned from a cut-off glove finger rubber banded onto Flutter Valve Penetrator. End of finger is cut to allow air exit, but stop negative pressure inflow.
[* green] A clip-on deflector bends glove finger at base to improve valve performance
[* icon_note] Halo with correct inflow rate maintains continuous positive pressure. The flutter valves should rarely if ever need to close.
[* icon_caution] Test that your airflow and expiratory fittings configuration maintains positive pressure even during inspiration The bag should remain pressurized during inspiration.
[* icon_caution] DO NOT modify design to stent bag open. Bag should readily collapse. Bag collapse prevents negative pressure development.