Rosenbauer - Compressed air foam systems
Powerful CAFS firefighting equipment.
Efficient. Universal. Safe.
Production of CAF foam
Mode of action of CAFS foam
CAFS stands for Compressed Air Foam System and is a
During active foam expansion, a single water drop is
system for the production of high-quality CAF (Compressed
distributed across multiple foam bubbles, which results in
Air Foam), which is used to fight solid and liquid fires.
a larger surface area for heat absorption. Furthermore, the
CAF foam sticks to the flammable material thanks to its
In the production of CAF, the same three components
homogeneous structure and thus enables continuous heat
are required (water, foam compound and air) as in the
absorption. As a result, a large part of the water bound
generation of conventional fire fighting foam. The crucial
in the CAF is able to evaporate, thus providing maximum
difference lies in the foam expansion of the water-foam
cooling at the seat of the fire.
compound mixture, which in the CAFS system does not
take place passively through the injector principle on
The oxygen is displaced from the flammable material
the nozzle, but rather actively in a mixing chamber in the
through evaporation of the water. Additionally, a natural
system by means of compressed air.
separating layer is created between the flammable mate-
rial and the oxygen as a result of the CAF foam. Thus the
Due to this active foam expansion, the resulting CAF
oxygen supply to the seat of the fire is interrupted in the
foam has a more homogeneous foam structure as well
best possible way.
as a much higher energy content in comparison with
conventional fire fighting foam.
Due to the high kinetic energy of the CAF foam and the
reduction of surface tension through the added foam
compound, water can penetrate deeper into the flammable
material and thus soak in better.
Suffocation by displacement of
oxygen
Cooling by evaporation of fire
fighting water
Suffocation by separating the
reaction partners
Reduction through penetration of
the flammable material

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