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How does PPV work?
 In a typical PPV application, the blower is placed about
four to ten feet from the doorway of the structure. It is positioned
so that the cone of air produced by the blower completely seals the
opening. Once the doorway is sealed, air pressure inside the structure
builds almost instantly. An exhaust opening, usually a rear door or
window, allows the air to quickly escape due to the difference between
the outside and inside air pressure. The smoke, toxic fumes and other
contaminates are quickly cleared and replaced with fresh, clean air.
The Tempest Power Blower’s unique shroud design
creates the “cone of air” that is essential for PPV to work.
In addition, the multiple blades of the AirFlex Impeller create the
pressure required to get the air moving.
How PPV Provides Increased Safety For Firefighters
- Smoke
and heat are significantly reduced, allowing firefighters to enter
structures upright in some cases.
- Visibility is improved making it easier to locate
victims and find the seat of the fire.
- The level of toxic gases, CO and other gases released
from burning synthetics are reduced.
- PPV reduces the chance of flashover.
How PPV Provides Increased Worker Safety
- Fumes, dust and odors can be effectively controlled
and ventilated.
- Harmful gases such as carbon monoxide can be kept
within OHSA required levels.
- Fumes from coatings can be contained and isolated
from adjacent areas.
- Confined spaces such as tanks, tunnels and pipelines
can be quickly ventilated.
- PPV can be used to control anhydrous ammonia in the
event of a refrigeration leak.
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