Centrifugal Upblast Roof Exhaust Fans

A centrifugal upblast exhaust fan is a roof-mounted fan that discharges extracted air upward, helping direct exhaust away from the roof surface and nearby equipment. IPF Colasit’s CRDV in-line or roof-mounted plastic fans are designed for industrial ventilation and chemical processing applications, with polypropylene and spark-resistant PPs-EL construction options for demanding or spark-sensitive environments.

Upblast roof fans discharge exhaust vertically upward, while downblast fans direct exhaust downward or laterally across the roof area. The appropriate arrangement depends on the building layout, exhaust characteristics, roof design, and clearance requirements. For corrosive gas streams, thermoplastic construction and the selected discharge configuration should be evaluated together with the application and installation conditions.

Available construction materials include PVC, polypropylene, and spark-resistant PPs-EL. These thermoplastics are selected for resistance to corrosive chemical gas streams and demanding industrial environments. Product information also identifies stainless steel motor mounts, support sets, and mounting hardware. Material selection should reflect the chemistry, operating conditions, and spark-control requirements of the exhaust application.

The listed fan products cover airflow capacities from 50,000 to 125,000 CFM, with product information identifying movement up to 125,000 cubic feet per minute. Selection also considers static pressure, system resistance, drive arrangement, and installation configuration. The fans can handle up to 24 inches of static pressure according to the provided product information.

Certain configurations are available in spark-resistant PPs-EL material, and explosion-proof motors are identified as an optional feature for applicable blower products. These options are intended for spark-critical or explosion-prone facilities. The complete exhaust system should be reviewed against the facility’s hazard classification, process conditions, motor requirements, and applicable engineering specifications before selection.

Listed applications include industrial ventilation, chemical processing, dust collection, corrosive environment exhaust, chemical and corrosive gas ventilation, fume extraction, roof-mounted installation, and spark-sensitive or explosion-prone facilities. The products are also used with process exhaust systems, including installations requiring horizontal in-duct mounting. Application review should confirm material compatibility and system pressure requirements.