Allied Medical LLC 12-80-4031 is a specialized DISS style adapter designed for oxygen systems. It features a standardized DISS hand-tight nut that transitions to a 1/8" NPT male thread, providing a secure and gas-specific connection between hospital outlets and medical equipment. The hand-tight nut design is specifically engineered for rapid, tool-free installation, while the green color-coding provides immediate visual identification for oxygen service. This adapter is essential for converting threaded manifolds or wall outlets to accept standard oxygen-specific connections. Its gas-specific design ensures that only oxygen-related components can be integrated, maintaining strict clinical safety protocols and preventing accidental cross-connection with other pressurized medical gases.