Hooded Roof Ventilators

These ventilators are suitable for industrial ventilation, chemical processing, dust collection, corrosive environment applications, and facilities with spark-sensitive or explosive-atmosphere requirements. Product selection should consider the gas stream, chemical exposure, airflow, static pressure, mounting arrangement, and required material. IPF Colasit offers polypropylene and spark-resistant PPs-EL construction options for applicable systems.

The CRDV In-Line / Roof Mounted Plastic Fans are available in polypropylene and spark-resistant PPs-EL. Thermoplastic construction helps resist corrosive chemical exposure without relying on a surface coating that may fail if chipped or pinholed. Stainless steel is used for the motor mount and support sets, while the airstream is designed to contain no metal apart from that motor-mount component.

The listed CRDV fan range provides airflow capacities from 50,000 to 125,000 cubic feet per minute. Actual selection depends on the required airflow, system resistance, static pressure, gas-stream characteristics, and installation configuration. The fans can handle up to 24 inches of static pressure according to the supplied product information. Confirm operating requirements with IPF Colasit before specifying a unit.

Yes. The CRDV design supports vertical in-line or roof-mounted configurations and horizontal in-duct mounting. Roof covers and flexible connectors are also available. The appropriate arrangement depends on the building structure, duct routing, discharge requirements, access, and maintenance considerations. Providing the planned installation details helps IPF Colasit guide the selection of a compatible configuration.

They are designed for corrosive environment applications and chemical processing. Polypropylene is described as chemically inert across most of the pH range, helping resist acid and caustic attack through the material’s full wall thickness. The correct fan material still depends on the specific chemistry, concentration, temperature, airflow, and process conditions in the exhaust stream.

The listed fans use a low-maintenance design and are intended for long service life, with clients reporting use exceeding 25 years. Thermoformed casings, automatically welded construction, and injection-moulded impellers support the equipment design. Routine maintenance should follow the installed system’s operating conditions and include appropriate inspection of the fan, motor, supports, ductwork, and connected components.