Why does “surge” or “stall” occur in a centrifugal fan?

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Surge (or stall) happens at low flow and high-pressure conditions, causing airflow pulsations and vibrations that reduce efficiency. It can be prevented by installing flow-stabilizing devices or adjusting the operating range. For anti-surge solutions, visit www.scy-fan.com, call +86-533-5201284, or email manager@svy-fan.com.