Flat Roof Exhaust Fans

Flat-roof ventilation can use a roof-mounted exhaust fan connected to process ductwork, or an in-line fan installed within the duct system. Selection depends on the air stream, required airflow, static pressure, chemistry, temperature, mounting arrangement, and site safety requirements. IPF Colasit offers thermoplastic and FRP options for industrial, corrosive, chemical, and laboratory applications.

Available materials include PVC, polypropylene, spark-resistant PPs-EL, and fiberglass reinforced plastic. Material selection should reflect the chemical composition, temperature, static-control requirements, and operating conditions of the exhaust stream. Polypropylene resists acid and caustic attack through the full wall thickness, while PVC and FRP options address chemistries and temperatures outside polypropylene’s suitable range.

The available products cover airflow ranges from 6,000 to 50,000 CFM and from 50,000 to 125,000 CFM, depending on the fan type and configuration. Product selection should also account for static pressure, duct losses, system resistance, air chemistry, temperature, and the required operating point rather than airflow alone.

Yes. IPF Colasit fans are designed for industrial ventilation involving corrosive gases and chemical-laden air streams. PVC, polypropylene, and FRP construction options help address demanding environments such as chemical processing, wastewater treatment, metal finishing, and laboratory fume extraction. The correct material and configuration should be selected against the actual chemistry and operating conditions.

Selected products are available in spark-resistant PPs-EL material, with spark-resistant or sparkless options and explosion-proof motor options identified for applicable configurations. Final suitability requires review of the hazardous-area classification, process chemistry, static-control requirements, motor specification, and applicable project safety standards by qualified engineering personnel.

These fans are designed for low maintenance, with features such as thermoformed and automatically welded components, balanced impellers, and stainless steel support sets. Belt-drive configurations may use bearings that require no greasing for the stated service interval. Maintenance should still follow the selected product’s documentation and include inspection of the fan, drive, supports, duct connections, and safety components.