What is the foam expansion ratio range for high-expansion foam?

High-expansion foam is characterized by its ability to expand significantly beyond the volume of the liquid foam concentrate used to create it. This expansion allows high-expansion foam to blanket large areas and displace oxygen, thereby suppressing fires effectively in places with limited accessibility. The typical expansion ratio range for high-expansion foam is generally between 200:1 and 1000:1. This means that for every unit of liquid foam concentrate, it can produce between 200 and 1000 units of foam. This high expansion capability is especially useful in scenarios like industrial and commercial settings where fire risks are present in confined or enclosed spaces.

Understanding foam expansion ratios is crucial for fire suppression operations, as it helps determine how to apply foam effectively in different fire situations. High-expansion foam can achieve a lower application rate while providing significant coverage, making it particularly advantageous for protecting structures, machinery, or firefighting crews in certain environments.