Radial pressure blower ventilators

Centrifugal Radial Blowers have a narrow width fully shrouded radial bladed Impeller - for dirty air ventilation. High pressure blowers are used in the combustion and forced ventilation industries, where a high pressure is required at a low volume. Air-Pollution Control Equipment which includes suction hoods, air conveyance ducting, blowers & air pollution control dust collectors. Dust and fumes are extracted by hoods and carried by ducting which are controlled by dust collectors. A blower is connected with an electric motor.

NIS-CO FANS AND BLOWERS

Radial bladed fan

Over pressurization can also cause deadheading (zero airflow through the blower) and catastrophic failure. Some blowers tolerate deadheading, but other models (typically those above 1 hp) must have air passing through them for cooling. If air does not pass through the blower, heat builds up in the impeller causing it to expand at a faster rate than the housing. Eventually the impeller locks up with the housing and the blower fails. A relief valve prevents overpressurization and deadheading conditions and allows air to pass through the blower.
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