| Note: | • An SCBA can have a quick-disconnect valve or "buddy breathing" accessory only if the valve or accessory does not do any of the following: |
| – Damage the SCBA. | |
| – Restrict the SCBA's air flow. | |
| – Interfere with the SCBA's normal operation. | |
| – The "buddy breathing" accessory or quick-disconnect valve need not be certified by NIOSH. |