What do non-air aspirating nozzles produce in terms of expansion ratio?

Non-air aspirating nozzles are designed to create a certain expansion ratio that influences the behavior of the water being discharged. They typically produce an expansion ratio of about 8:1 to 10:1. This means that for every one part of water, the volume expands to be eight to ten parts when it interacts with air or foam components, thus promoting effective firefighting capabilities.

This high expansion ratio is crucial in firefighting applications because it allows for a greater surface area of the extinguishing agent to interact with the fire, offering improved heat absorption and fire suppression. Understanding these ratios helps firefighters select the right type of nozzle for specific firefighting scenarios, ensuring that they can achieve optimal effectiveness while minimizing water usage and runoff.

The other options present lower expansion ratios that do not align with the characteristics of non-air aspirating nozzles, which are known for their higher expansion performance. This quality is a defining characteristic that enhances their effectiveness in managing various types of fires in facility firefighting operations.