Is the effect of kn95 mask with breathing valve and without breathing valve the same?
1. The protective effect is the same for the wearer. 2. The breather valve only has a protective effect on the wearer. If you are a virus infected person, the gas and droplets you breathe out may pose a threat to others. If you are a healthy person, it doesn't matter. 3. Breathing out with breathing valve is smoother. This thing is a diaphragm, which automatically closes when you breathe in, and blows off when you breathe out. 4. If you want to buy a breathing valve, it is recommended that you directly look for industrial dust masks. It also has a breathing valve, the mask is reusable, and the filter element inside is a one-time replacement. The long-term use cost is much cheaper, and the wearing comfort is much better than disposable masks. The more common 3m 3200 mask is equipped with 3700 filter cotton socket, and various domestic imitation models. Filter cotton uses 3701cn, which is also the protection level of kn95.