There’s no clear difference between effectiveness of masks with and without valves.
Some of the highest performing masks have valves.
See our test graphics below:
The graphics combines Smart Air’s test data and Richard Saint Cyr MD’s fit test results.
Click here to read the original answer on Quora: https://www.quora.com/N95-mask-with-a-valve-better-than-one-without
Free Guide to Breathing Safe
Want to learn more about breathing clean air? Join thousands more and stay up to date on protecting your health.
Was this article useful?
