Discharge nozzle markings for Halon 1301 must include which information?

• A. Identity of the manufacturer
• B. Type of orifice
• C. Size of orifice
• D. All of the above

Answer: (D)

Discharge nozzle markings must convey three pieces of information because each one plays a crucial role in ensuring the system delivers the correct amount of agent where it’s needed. The identity of the manufacturer is included so technicians can verify authenticity, ensure compatibility with other components, and source the correct replacements if maintenance or recharging is needed. The type of orifice identifies the nozzle design and how the agent will be released, which influences the spray pattern and distribution within the protected space. The size of the orifice is the actual opening area that controls the flow rate; this directly affects how much agent is discharged and the resulting concentration. Taken together, all three pieces are necessary to verify the nozzle matches the system design, perform accurate discharge calculations, and maintain or restore the system correctly.