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Anyone tried valve-free reusable respirators?

Posted
by Jean Bishop Jean Bishop (New) New Educator

I'm wondering how many members here have tried out some of these new valve-free reusable elastomeric respirators? I saw discussion on Twitter about this respirator, which looks like it has NIOSH approval and doesn't have an exhalation valve:

https://encycla.com/Dentec_Comfort_Air_Nx - Dentec Comfort Air Nx (and there's an "NxMD" model in white for healthcare use)

I also see that MSA has a respirator which now has NIOSH approval that doesn't have an exhalation valve - the MSA Advantage 260 - https://us.msasafety.com/advantage290

Wondering if anyone has experience with these & what their experiences have been. I have been using an Envo Mask with the valve plug but I do not feel like I get a perfect seal like I do with some of the more old school half masks I've tried in the past such as the North 7700.

As far as I know, these are the valve-free reusable respirators with NIOSH approval:

I see Envo Mask has a new cover with without a valve but I cannot tell if they have NIOSH approval yet: https://store.envomask.com/filter-cover-ventless---accessory-p44.aspx

I use the Envo Mask with the valve plug which has NIOSH approval (according to emails with Envo)

The 3M 6000 Series has a valve filter which has NIOSH approval and is sold by 3M. Is anyone using this? https://www.3m.com/3M/en_US/p/d/v101254496/

I have the 290, it was kind of a pain to get ordered though.

 

My impression on it is that it is very breathable and comfortable. My biggest issue is the puddle that forms by my chin in the catch. Periodically it needs to be drained out. Filters last until you can't breath through it and the mask itself can be wiped down easily. 

That being said, its a little bit on the cheap manufactured side and I'm not sure how long term wise it would last.