Facts & Questions

Q: Can you vacuum water through the Dustopper?

A: Dustopper can be a best friend when mitigating flood damage in a basement, or for collecting water in general. Here’s the setup:

  • Remove the pleated filter
    • There’s no dust to filter from the air and we don’t want tiny droplets of spray to moisten the filter.
  • Now, use your Dustopper for picking up water, same as you would for dust.
  • When the bucket under the Dustopper is nearly full, simply detach the Dustopper and carry the bucket away for easy disposal.
  • When all water has been collected, empty what little made it into the vacuum’s collection container.
    • There may be a cup or two there as well.
  • Easier to carry around and empty a bucket of water than do the same with a wet/dry vacuum!
  • When your done, wipe down the inside of the vacuum’s container, and then restore the original Dustopper setup.


Q: Will a Dustopper work well with a conventional central shop vacuum with 4″ Ductwork?

A: This is a very good question, and the answer may surprise you until you think the dynamics of air flow. Large, central vacuums are capable of moving hundreds of CFM, or many times the flow volume moved by a typical wet/dry vacuum. But….their ability to move a large volume of air requires movement of the air through a fairly large diameter duct, typically 4 inches. Stepping down to a 2-1/2” diameter hose does not concentrate the power to a smaller outlet….UNLESS there is sufficient static suction held in reserve. If you were to measure the static suction of your Shop Fox blower, you would find that it has very little static suction; a little less than 6” of water lift, versus 45-90” of water lift on a typical shop vac. (See the specs for your vacuum below my comments)

Static pressure is always measured on a closed system, and is the maximum amount of suction a vacuum motor can create. In reality, the maximum amount of air, measured in CFM, that can be drawn through a 4” duct at 5.67” of lift is about 800 CFM. Since most wet/dry vacs have 8-15X the static suction, they are able to move much more air through a 2-1/2” hose than will your much larger Shop Fox vacuum.

Cyclonic separators also restrict air flow, so using on a vacuum with low static pressure adds another wrinkle to the problem. In order to get maximum separation from a cyclone, the source of vacuum should be able to overcome the added restriction of airflow caused by the cyclone, AND have enough concentrated power to move a large volume of air through a relatively small hose.

Bottom line: You would be disappointed with ANY cyclone type separator designed for use with 2-1/2 hose that would be interfaced to your Shop Fox vacuum. Dustopper is looking at a larger size of separator for use with central vac systems, and our goal is to make as product announcement later this fall.

Have a question?

Please feel free to contact us! We will get back to you as quickly as possible.
info@dustopper.com or service@dustopper.com
Call us at 833-DUSTOPP or 833-387-8677 - Hours: Monday-Friday 8:30-5:00 PM EST


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