Fluorine-Free Foam Concentrate

Fluorine free foam concentrate is a firefighting foam that does not contain fluorinated surfactants, often referred to as “forever chemicals” (PFAS) because they do not break down easily in the environment.

It is designed to extinguish flammable liquid fires by forming a stable foam blanket that suppresses vapours and prevents re-ignition.

Delta Fire foam systems are compatible with fluorine free foam concentrates when correctly specified and used with appropriate proportioning equipment.

These foams are increasingly adopted by fire and rescue services and industry as regulations move away from PFAS based products, while still delivering effective fire suppression for Class B fuel risks when properly applied.

Yes, it can be used across many applications, but effectiveness depends on the specific risk, fuel type, and foam formulation selected. Different concentrates are designed for different hazards, so correct specification is important.

Yes, fluorine free foam can be used in existing foam equipment and proportioning systems, but suitability depends on the condition and compatibility of the installation.

Delta Fire foam equipment is generally compatible with fluorine free foam concentrates, however some systems may require adjustment to ensure correct proportioning and performance.

If the equipment has previously been used with PFAS based foams, often referred to as “forever chemicals”, thorough decontamination is essential. This usually requires professional cleaning to remove residues, as cross contamination can affect foam performance. In some cases, replacement of components or the full system may be recommended depending on age and condition.

Fluorine free foam concentrate should be stored in a cool, dry, and well ventilated area away from direct sunlight and extreme temperatures.

It should be kept in its original, tightly sealed containers to prevent contamination or evaporation, and stored on suitable bunded flooring to contain any accidental leaks.

Delta Fire recommends following manufacturer guidance for storage conditions, as different foam types may have specific temperature and shelf life requirements.

Regular stock checks should be carried out to ensure the concentrate remains in good condition, within its shelf life, and free from contamination before use.

The typical shelf life of fluorine free foam concentrate is usually around 10 to 20 years when stored correctly, although this can vary depending on the manufacturer and specific formulation.

When switching from fluorinated foam to fluorine free foam, several key factors need to be considered to ensure performance and system compatibility.

First, the existing equipment must be assessed. Systems previously used with PFAS based foams, often referred to as “forever chemicals”, may require thorough professional cleaning to prevent contamination, or in some cases replacement of components.

Second, proportioning and discharge equipment should be checked and, if necessary, adjusted to ensure the correct foam induction rate and expansion with the new concentrate.

Third, the type of fire risk is critical. Fluorine free foams vary in performance, so the selected product must be suitable for the specific hazards on site, such as hydrocarbon or polar solvent fuels.