Which component is used to inject foam concentrate into the water stream in foam-water sprinkler systems?

Which component is used to inject foam concentrate into the water stream in foam-water sprinkler systems?

• A. Foam concentrate
• B. Proportioner
• C. Check valve
• D. Gauges

Answer: (B)

In foam-water sprinkler systems, creating the foam solution requires injecting a precise amount of foam concentrate into the water stream. That job is done by the proportioner. The proportioner pulls foam concentrate from its supply and blends it with the water at a set ratio, ensuring the foam solution reaches the sprinklers at the correct concentration for effective foam blanket. The foam concentrate itself is the material being added; a check valve helps prevent backflow into the water supply; gauges simply monitor system pressures and do not introduce concentrate.

In foam-water sprinkler systems, creating the foam solution requires injecting a precise amount of foam concentrate into the water stream. That job is done by the proportioner. The proportioner pulls foam concentrate from its supply and blends it with the water at a set ratio, ensuring the foam solution reaches the sprinklers at the correct concentration for effective foam blanket. The foam concentrate itself is the material being added; a check valve helps prevent backflow into the water supply; gauges simply monitor system pressures and do not introduce concentrate.