NFPA 99 establishes material requirements for check valves in the Emergency Oxygen Supply Connection.

• A. True
• B. False
• C. It does not establish any material requirements
• D. It depends on EOSC manufacturer

Answer: (C)

NFPA 99 focuses on safety, performance, and testing of medical gas and vacuum systems, including devices that prevent cross-connection and backflow in emergency oxygen supply connections. It does not mandate the specific materials that a check valve must be made from. The material used for these components is determined by separate equipment standards and the valve manufacturer, with emphasis on oxygen compatibility and ignition resistance in oxygen-rich environments. So while NFPA 99 requires proper function, installation, and verification of the EOSC and its backflow protection, it does not establish material requirements for the check valves themselves.