The water mist extinguishing mechanism is two fold.
- Removal of heat energy from the fire plume due to vaporization of mist into steam. The large surface area per unit volume inherent in smaller droplets results in a very efficient and rapid heat transfer process.
- Localized displacement of oxygen from the fire base due to the production of steam. When water changes into steam, it expands by a factor of 1650 times which results in oxygen displacement in the immediate fire area.
The SECURIPLEX Low Pressure (FIRE-SCOPE® 2000) and High Pressure (FIRE-SCOPE® 5000) produce a water mist with droplets in the Dv0.99 range of 200 microns.