Applications: R-5 replacement parts (exhaust valve, intake valve). [Functions and Features] This is a very important part where the valve opens and closes when you breathe. Depending on the frequency of use, this set of 2 pieces will last for 1 year if you replace it once in half a year. You can choose the color of the mask so as not to be mistaken! Set Includes: Exhaust valve, intake valve. [Caution] Make sure there are no stains or scratches on the exhaust valve seat, and be sure to install it correctly according to the instruction manual on the mask itself. Please read the instruction manual on the mask before use.
Make sure there are no stains or scratches on the exhaust valve seat, and be sure to install it correctly according to the instruction manual on the mask itself. Please read the instruction manual on the mask before use