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Figure 9: Connecting a single circuit with expiratory valve and pressure line
Once your circuit is connected to the device, you can connect the mask
to the other end of the circuit.
Option 3 – Double circuit
1. Firmly connect one limb of the circuit to the air outlet .
2. Then connect the other limb .
Figure 10: Connecting a double circuit
P
1
2
3
2
3
Expiratory valve tube
Expiratory valve control
Pressure line
(Prox. P.)
P
Pressure line tube
1
2
Symbol
identifying
air outlet
Symbol
identifying
air return