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Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
#11
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
I though a low leak rate was good, but I see your point that if there is no air coming out it should show a low leak rate.  Isn't there a flow rate graph as well as leak rate?  Maybe we need a more knowledgable poster.
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#12
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
I agree. I'll take a screenshot and post it in a new thread.
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#13
Question 
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
Not a good design - with the pressure of the air coming up the tube, through the “vented” elbow and up into the mask, how can the CO2 flow back and expel back down to the elbow properly?  Not! ?
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#14
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
when your not inhaling the pressure will force the co2 out the vent. I am sure Resmed have tested this extensively
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#15
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
Thanks for the reply, but If it is venting out, it is very, very minimal, and all the small vent holes are all clear - I will be looking for something better (like the older, vented masks) to help me sleep better
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#16
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
When I need to use a FFM, I use the F20 with the older non-quiet elbow, and it works fine for me. It vents much more air that way (which is the reason I don't use it often, because it blows on me).
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#17
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
As I have posted on other threads about this subject that the elbow is actually releasing air - it is a terrible new venting system - almost no air gets CO2 re-exhausted on mine. I really am thinking of going back to the older, vented-masks with the vent holes, in lieu of my much more comfortable F20 AirTouch mask ?
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#18
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
(04-22-2020, 09:58 AM)Vamurphys Wrote: Thanks for the reply, but If it is venting out, it is very, very minimal, and all the small vent holes are all clear - I will be looking for something better (like the older, vented masks) to help me sleep better

 When you are not inhaling, all the in rushing air has to go somewhere. The vent holes in the elbow is the exit. If the holes weren't adequate or somehow plugged the mask would leak around the cushion edges during each exhale. The exiting air that is not being inhaled is removing the exhaled CO 2 at the same time. The fact that the air is not leaking around the mask edges is proof that the vents in the elbow are venting completely.
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#19
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
I agree with lacro. I know for a fact the F20 QuietAir does have vent holes under the opaque cover. If looked at from a you're-wearing-the-mask perspective, you can see the back side of the vents.
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEBSITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#20
RE: Anyone's F20 Quiet Air Elbow Not Diffusing/Venting ANY Air?
I've been wearing an F30 with the quiet elbow--and what genius marketer came up with that name?--and I've had very good mask seal; certainly no burping out the edges of the mask. And I don't have a sense of being oxygen deprived in the morning. In fact it's working very well. I like the mask so far!
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