General Equipment Company’s GP21 Positive Pressure Ventilator borrows heavily from the highly successful positive pressure technology utilized by fire departments for smoke removal. The gas-powered GP21 is the first positive pressure ventilator designed specifically for construction-related applications.
Positive pressure technology involves the production of a high volume of air that is directed through an opening and into a job site. The high-static pressure capabilities of the unit’s propellers create a pressure differential that channels the airstream through an available exit and into the atmosphere. Hazardous dusts, fumes and ambient temperature extremes, found in many construction-related activities, can be effectively minimized or eliminated using this method. Positive pressure ventilators can dramatically increase job site productivity and simplify compliance with OSHA atmospheric contamination regulations.
Powered by a 5-1/2 horsepower Honda gasoline engine, the model GP21 produces an airflow rate of 11,000 CFM (cubic feet per minute) with a static capacity of 5 inches or more. An electric powered model (EP17) is also available.
The GP21 features a welded, heavy-gauge tubular structure that quickly adjusts to effectively direct the air stream.