Exhaust System - CO2 Removal
How simple can it be?
Cover plate on lower left is removed to access 1 silicon/rubber flapper
valve for oral nasal. Exhaust is ducted to barrel on right.
Helmet shell exhaust valve is at base of barrel. Both helmet shell [1]
exhaust and oral/nasal [2] exhausts pass thru flapper valve disk [3] and out
thru perforated cover on lower right. All 3 flappers are silicon rubber for
longevity and excellent performance.
NO EXHAUST GASSES PASS THRU REGULATOR HOUSING
Oral/Nasal Exhaust
Duct
Shell Exhaust
Shell & Oral/Nasal
Exhausts
------------
------------
Y
------
out thru
perforated
cover
NO EXHAUST GASSES PASS THRU REGULATOR
Keeps regulator cleaner - Less CO2 build-up in hat.
_____
____
Exhaust
out
Air in from
regulator
2 x 2 Flapper Valves
separate exhaust
2 into 1 Flapper Valves
ducted exhaust