What are foam spray nozzles or spray manifolds designed to do in a foam-water spray system?

• A. Distribute foam solution.
• B. Filter the water.
• C. Provide electrical isolation.
• D. Attach to the wall.

Answer: (A)

Foam spray nozzles and spray manifolds are meant to distribute the foam solution evenly throughout the protected area. They mix the foam concentrate with water and discharge it as a spray or foam blanket that blankets the fire, providing cooling, fuel separation, and film formation to improve extinguishment. This distribution is critical for cover and effectiveness; the other functions—such as filtering water, providing electrical isolation, or mounting the assembly—aren’t the purpose of the foam nozzle or manifold.