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I just bought a 2hp Cincinnati Fans vacuum and I'm wondering how to set it up. It has a 6" inlet and outlet, none of my usual sources carries something that big.

Wynn Environmental carries a clear hose and a solid hose, is there another source I can check?

Also, what can I use for the piping? Can I just use 6" HVAC ducting and seal the seams with duct tape?

I have heard that PVC pipe is not recommended due to the static electricity it generates.

Suggestions??

-Ivan
 

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I would go with the PVC. The debate is never ending about PVC, but most reviews and blogs I have read said there is minimal danger using PVC. You can install grounding wire (found in most wood working catalogs) in the system an a minimal price if you are concerned. As Gerry said, the S&D is relatively inexpensive, flexible to design and install, and can be found at most home improvement and plumbing stores. When I priced the metal piping, it was way out of my price range. The hard part will be finding adapters to go from the 6" PVC to your typical 4" and 2-1/2" tools. You can use 6" to 4" PVC reducing couplers there, but that is where my troubles started.

I have a 4" system found it very frustrating going from the PVC to the typical plastic dust collection couplers most wood working stores carry as the so called adapters don't really fit into the PVC. I wrote a blog on it a while back and have since gutted some of my initial installation and redesigned it. I also have a couple of links to some shops that did it right.

My best advice though is to design your piping system in advance with as accurate of measurements you can get. This will help you not only price it out but save on a lot of runs to the plumbing supplier, local wood working store or catalog for all those parts you didn't realize you needed.
 

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You can't ground PVC because it's non conductive. All you can do is provide a shorter jump to ground for when the static builds up enough, THAT's what the wire does. You should be more worried about accidentally creating a spark that winds up in your collector bag (by hitting a staple, for example)

HVAC ducting is fine.

Grizzly Industrial sells all different sizes of hose. Good prices too.
 

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Discussion Starter · #9 ·
Thanks for the feedback. I was secretly hoping that PVC would be ok since I was researching the cost of actual Duct Pipe and was blown away at how expensive it is.

I ordered the Flex Hose from Grizzly, why I didn't think of that earlier I don't know. Love the Griz.

I'll put something together next week and post some pics.

Thanks again,
Ivan
 

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not trying to dance on your parade- but although metal/PVC is definitely good enough for longer runs - flexible hose is NOT. because it's flexible and has all the ridges, it creates too much torbulence and significantly reduces air flow, it should be kept to a strict MINIMUM if used.
 

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There are two gauges of galvanized duct work. For 6" you need the heavier stuff. I believe it's 26 ga. and the thin stuff is 30 ga. There are a variety of PVC pipe grades, you want the S&D ASTM 2729. Perhaps you were not comparing the right stuff. Nothing wrong with the metal stuff.
 

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They make another conduit it is called DB2 it is used for underground electrical services it is thinner than RPVC and the fittings used for most dust collection systems also fit this conduit. I would install a ground wire along the length of any non-metallic piping. It may never happen that you would build up a static charge large enough to cause a spark to ignite your sawdust, but why take a chance.
 
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