How LEADER Group’s DIPHASIC mist system improves fireground safety
Iain Hoey
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Firefighting system uses mist to provide 98% radiant heat protection
LEADER Group has announced a new firefighting technology called the DIPHASIC system which provides up to 98% protection against radiant heat flux during fireground interventions.
The system was developed in collaboration with the Paris Fire Brigade and other fire services to address increasing operational challenges.
This technology uses an air and water mixture to generate a mist composed of more than 1.5 billion micro-droplets per litre.
Projected at high speed, these droplets disperse throughout a volume and move around obstacles to act directly on hot gases.
The system prioritises the effectiveness of each litre of water rather than increasing overall flow rates.
Operational deployment of the technology has been in place since 2023 following scientific validation and real-scale testing.
The company will present the system at INTERSCHUTZ 2026 in Hall 13 at Booth F20 / G20.
Reducing water consumption and structural damage
Fire crews using the mist can reduce water usage by four to six times in some configurations while maintaining operational effectiveness.
Lower volumes of water limit structural loading from accumulation and reduce flooding in residential or commercial buildings.
This reduction in water use also decreases restoration requirements following fire incidents.
The system is intended to stabilise fire behaviour including flashover and backdraft conditions.
Crews can use the technology for the rapid cooling of smoke and hot gases to improve safety during advancement.
It supports firefighting without a direct line of sight and improves visibility within compartments.
Tactical applications in confined and remote environments
The DIPHASIC system has been applied in structural fires, underground parking fires and naval or airport operations.
Its ability to move through enclosed volumes is intended to support firefighting in confined environments or remote locations with restricted water access.
LEADER Group explained that the system is designed to complement existing firefighting methods rather than replace them.
It is positioned as a tactical option for use alongside established equipment depending on fire conditions and crew judgement.
The technology contributes to wider discussions regarding whether operational strategy should prioritise higher flow rates or efficiency in water application.
LEADER Group has 40 years of experience in manufacturing firefighting equipment and supplies products to more than 120 countries.
