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When it comes to dust collector hose selection, there are a few common sense rules. First, depending on the type of collection system needed, it may have it's own specifications as far as hose size and run limits. But the type of hose has good and bad points to consider.
There is PVC pipe, flex hose, and duct work. And as with plumbing, the more turns and bends there are, the more restrictive the water, or in this case, the air. The recommended hose is the metal duct work; it's smooth and harder to brake than the PVC. The flex hose, of course, is a quick hook up. Another recommendation is the use of waste gates and attachments. They also can be used on flex hose ends to clean up whatever.