Resistance with Anti-Asphyxia Valve Closed to Atmosphere
Drop in Pressure at
All sizes
Closed to Atmosphere: A minimum of 3 cm H
that the anti-asphyxia valve closes.
Open to Atmosphere: In the absence of positive airway pressure, the anti-
asphyxia valve will open.
Inspiratory and Expiratory Resistance with Anti-Asphyxia Valve Open to
Atmosphere at 50 SLPM
Inspiratory Resistance
Expiratory Resistance
Deadspace
S
150.4 mL
M
148.8 mL
L
167.8 mL
Sound Levels
A-weighted Sound Power Level
A-weighted Sound Pressure Level at 1m 24.2 dBA
Disposal
Dispose of in accordance with local regulations.
Dispose of mask and headgear annually.
Storage Conditions
Temperature: -4° F to 140° F (-20° C to 60° C)
Relative Humidity: 15% to 95%, non-condensing
50 SLPM
0.8 cm H
O
2
100 SLPM
2.0 cm H
O
2
O must be maintained to ensure
2
1.0 cm H
O
2
1.5 cm H
O
2
32.5 dBA
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