The 3M Inhalation Valve 6893/07144 (AAD), Respiratory Protection Replacement Part works with the 3M Full and Half Facepiece Respirators 6000 Series (sold separately). Using this replacement part can extend the service life of respiratory protection equiment.Keep your 3M Resusable Respirator well maintained and ready for use with 3M Resusable Respirator Inhalation Valve Assemblies. They are easy to fit and help increase the effective service life of your 3M Reusable Respirator. Our inhalation valves replace damaged or worn inhalation valves, and it’s specially designed for use with 3M Reusable Respirators.