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Dust Collection & Pollution Control Q&A

  •   For potentially explosive dust applications, do I need to install a backflow valve in the supply pipe system to isolate my upstream equipment from the risk of an explosion inside my dust collector?

    Answered December 10th, 2009 by Expert: Rob Williamson

    Yes, I would highly recommend the use of a certified backflow damper device. This would isolate the workspace area from a possible explosive incident. The backflow damper would prevent a flame from traveling through the pipe (duct) system and exiting through your source capture hoods.

    During the system design and specification process the explosive characteristics of the dust, as well as the valve’s location and orientation, needs to be considered.

    Components that are ATEX certified are excellent choices, because they have passed stringent and standardized tests to certify the components for different explosion scenarios.

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