Maintain Your Respirator for Long-Term Reliability The MIRA SafetyA(R) Gas Mask Valve Replacement Kit contains the essential replacement components needed to help maintain compatible MIRA SafetyA(R) full-face respirators. Rubber valves and sealing components naturally age over time, making routine maintenance an important part of keeping your equipment in proper working condition. Whether you&';re replacing worn components or refreshing a long-term stored respirator, this kit provides the key valve components used in compatible MIRA SafetyA(R) gas masks. What&';s Included (4) Inner Mask Valves* (1) Exhalation Valve (1) Exhalation Valve Cover (1) 40 mm Port Plug 40 mm Port Plug Most MIRA SafetyA(R) gas masks feature dual 40 mm NATO filter ports. The included port plug allows one port to be sealed, enabling operation with a single filter for a lighter, more streamlined configuration. Compatibility Compatible with: CM-6MA(R) CM-7MA(R) CM-8MA(R) Please note that the inner mask valves included in this kit are only used on the CM-6MA(R). Not compatible with children&';s respirators. Installation & Safety Although installation is relatively straightforward, MIRA SafetyA(R) recommends having replacement components installed by a qualified respirator service center. Professional service centers can verify the respirator maintains a proper seal using specialized fit-testing equipment. If installing the components yourself, always perform a negative-pressure user seal check before placing the respirator into service. MIRA SafetyA(R) and its affiliates are not responsible for improper installation, incorrect assembly, unauthorized modifications, or inadequate maintenance.