Keep your 3M™ Resusable Respirator well maintained and ready for use with 3M™ Resusable Respirator Exhalation Valve Assemblies. They are easy to fit and helps increase the effective service life of your 3M™ Reusable Respirator. Our exhalation valve replaces damaged or worn exhalation valves, and it’s specially designed for use with 3M™ Reusable Respirators.