Air-lock valve is used for discharge of dust and other separated particles from systems working with vacuum or pressure. It is dust proof and is used as a pressure block between a cyclone and a dust collecting bag. In connection with dust collecting Centrifugal Fans the air-lock valve is mounted between the bottom outlet of the cyclone and the dust bag, where it ensures a uniform and continuous discharge of dust and other particles, and at the same time minimizes the air escaping through the outlet into the dust bag.

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