PVC Dust Collection Blast Gate - self cleaning design with a detent feature
I recently added a Clearvue Cyclone dust collector to my shop. I plumbed it completely with 6" and 4" PVC piping. I needed a way to close off each branch to maximize the performance of the dust collector. Commercially available plastic blast gates are way to cheap and clog easily. The metal blast gates that solve this issue are price accordingly, EXPENSIVE! So I decided to build my own! This design is self cleaning, and has a detent feature to help keep in open or closed if it is mounted at…
Avoid common duct-design flaws
DO use the largest ductwork that fits your collector. Just because a tool comes with a 4" dust port doesn't mean you should use 4" main ducts or drops. Instead, look at the intake port sizes for the collectors you're considering. Most cyclones have intake ports of 6" to 8", and some two-bag collectors have 5"- or 6"-diameter intakes, so consider at least a 5" main duct. Tapered reducers, like the one below, change duct diameters with minimal static-pressure loss.