B-5 
Pneumatic medicament 
nebulizer connector 
Synchronous with inspiration at 6 to 9 L/min flow   
Safety valve release pressure  <125 cmH
2
O 
Inspiratory outlet (To patient 
port) 
Coaxial 22 mm/15 mm conical connector 
Expiration module 
Expiratory outlet (From 
patient port) 
Coaxial 22 mm/15 mm conical connector 
System compliance and resistance 
Compliance 
Adult disposable circuit (including inspiration safety valve, adult 
disposable patient tubing, water trap, expiration valve):  ≤4 
mL/cmH
2
O; 
Adult reusable circuit (including inspiration safety valve, adult 
reusable patient tubing, water trap, expiration valve, Y piece):  ≤2 
mL/cmH
2
O; 
Pediatric disposable circuit (including inspiration safety valve, 
pediatric disposable patient tubing, water trap, expiration valve):≤2 
mL/cmH
2
O; 
Pediatric reusable circuit (including inspiration safety valve, 
pediatric reusable patient tubing, water trap, expiration valve, Y 
piece):  ≤2 mL/cmH
2
O; 
Infant reusable circuit (including inspiration safety valve, infant 
reusable patient tubing, water trap, expiration valve, Y piece):  ≤1 
mL/cmH
2
O. 
Inspiratory resistance 
Not greater than 6 cm H
2
O at 60 L/min flow (adult reusable patient 
tubing) 
Not greater than 6 cmH
2
O at 30 L/min flow (pediatric reusable 
patient tubing) 
Not greater than 6 cmH
2
O at 5 L/min flow (infant reusable patient 
tubing) 
Expiratory resistance 
Not greater than 6 cmH
2
O at 60 L/min flow (adult reusable patient 
tubing) 
Not greater than 6 cmH
2
O at 30 L/min flow (pediatric reusable 
patient tubing) 
Not greater than 6 cmH
2
O at 5 L/min flow (infant reusable patient 
tubing) 
Bacterial filter 
Resistance: < 2 cmH
2
O at 60 L/min 
Particle size: Captures particles of 0.3 mm (micron) with > 99.99% 
efficiency 
Dead space: < 80 mL