The Allied 12-80-4215 is a specialized DISS style adapter designed for clinical vacuum systems. It features a DISS female knurled nut transitioning to a 1/4" hose barb for quick, hand-tightened connection to suction equipment and flexible tubing. This gas-specific assembly ensures system integrity by preventing accidental cross-connection with pressurized medical gases, making it essential for bedside suction setups and regulator attachments.