Which nozzle type is not one of the three listed handlines for foam delivery?

Which nozzle type is not one of the three listed handlines for foam delivery?

• A. Straight stream nozzle
• B. Smooth bore nozzle
• C. Fog Nozzle
• D. Air-aspirating foam nozzles

Answer: (A)

Foam delivery relies on nozzles that mix foam concentrate into the water and distribute it as foam. A straight stream nozzle shoots a tight, non-aerated jet and does not effectively entrain or mix foam concentrate, so it’s not used for foam delivery. The three foam handlines are the smooth bore nozzle, the fog nozzle, and the air-aspirating foam nozzle. The smooth bore can be used with foam solutions in the right setup, the fog nozzle atomizes the water to help foam spread, and the air-aspirating nozzle actively draws foam concentrate into the water to produce dense foam. So, the straight stream nozzle isn’t part of the foam delivery options.

Foam delivery relies on nozzles that mix foam concentrate into the water and distribute it as foam. A straight stream nozzle shoots a tight, non-aerated jet and does not effectively entrain or mix foam concentrate, so it’s not used for foam delivery. The three foam handlines are the smooth bore nozzle, the fog nozzle, and the air-aspirating foam nozzle. The smooth bore can be used with foam solutions in the right setup, the fog nozzle atomizes the water to help foam spread, and the air-aspirating nozzle actively draws foam concentrate into the water to produce dense foam. So, the straight stream nozzle isn’t part of the foam delivery options.