Why Are Rotary Airlock Valves Used In Dust Collection Systems? https://biographiespot.com/why-are-rotary-airlock-valves-used-in-dust-collection-systems/ Have you ever wondered how a dust collection system removes dust without losing air pressure or allowing dust to escape back into the workplace? A rotary airlock valve plays a key role in this process. It controls the movement of collected dust from the dust collector to the next stage.