Tempest positive pressure ventilation fans are the leader of positive displacement ventilating fans for firefighting, tunneling and construction confined space applications. Positive Pressure Ventilation, or PPV as it is commonly known, is a technique within both construction and firefighting applications that use air as a tool to control the hostile environment inside an enclosed structure and confined space.  Small electric and gasoline-powered fans (Tempest Power Blowers) are used to replace a hostile interior environment with fresh, cool ambient air. The most common blowers range in size from   7,000 to 24,000 CFM. Call and talk to a salesman today.

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