Each HF-800 Series facepiece contains two HF-800-02 replacement valves
Exhalation valve directs exhaled breath and moisture downward
For workplace/occupational use only
Inhalation valve allows filtered air to pass into the respirator
Package contents: 1 case contains 10 each replacement valves
Replacement part for 3M Secure Click Half Facepiece Reusable Respirator HF-800 Series
Replacement valves can extend the service life of HF-800 Series facepieces and potentially result in cost savings
Used as both the inhalation and exhalation valves