N95 respirator mask

polypropylenewith exhalation valvewith changeable filters

With the valve in the disposable dust mask, the valve is to point to the breathing valve, the role of the breathing valve is to reduce the heat and moisture accumulation, but also to a certain extent to reduce the respiratory resistance. Principle The application principle of the breath valve: when exhaling, the positive pressure of the exhaust gas will blow the valve sheet open, in order to quickly eliminate the exhaust gas in the body, reduce the sultry feeling when using a mask, and the negative pressure when inhaling will automatically close the valve, in order to avoid inhaling pollutants in the external environment. Disposable dust mask with respirator valve can make the wearer more comfortable and avoid the worry of damp feeling in the mask. It is suitable for people who need to wear dust proof masks for a long time, such as traffic policemen and outdoor workers.