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[Equipment] ResMed Quiet Air Diffuser Vent F30
RE: ResMed Quiet Air Diffuser Vent F30
(05-26-2020, 08:34 PM)dbotas Wrote: Instead of my CO2 exhale going out the pinholes as intended because of the pinhole and right angle and fabric packing extremely restricted passage, the CO2 rich exhale is just taking the path of lesser resistance and mostly being inhaled back up the elbow into my lungs along with the fresh air that’s being pumped by the CPAP unit.

I can't tell if you're talking about a modification that you made, or if you're talking about the unmodified product furnished by the manufacturer. If the latter, then you are safe.

The purpose of exhalation port is to keep the tubing purged of exhaled air thereby insuring that there is always a fresh supply of air being delivered to the mask from the tubing. The amount of exhaled air that remains in the mask to get inhaled again is negligible.
Sleepster
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RE: ResMed Quiet Air Diffuser Vent F30
I just realized that I haven't updated my posts. I received my F30 mask assembly several months ago. It's now my go-to mask. I use it most of the time, but occasionally switch to my F20 AirFit just for a change. 

That usually only lasts a night or two.............. Eat-popcorn
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RE: ResMed Quiet Air Diffuser Vent F30
I’ve come to the conclusion that I would rather have better airflow, and less rebreathing of my CO2, then “quiet”. Removed all the packing from the elbow and seem to be sleeping better with the less resistance of the packing in the elbow.
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