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Dust Collection Hose and Pipe - need sources

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Forum topic by Ivan posted 04-23-2010 03:29 AM 2757 views 1 time favorited 15 replies Add to Favorites Watch
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Ivan

170 posts in 2035 days


04-23-2010 03:29 AM

Topic tags/keywords: question

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

-- "Do it right the first time, you'll just kick yourself later..."


15 replies so far

View Ger21's profile

Ger21

651 posts in 1788 days


#1 posted 04-23-2010 04:37 AM

PVC is fine, and the cheapest is 6” S&D. ASTM2729

-- Gerry, http://home.comcast.net/~cncwoodworker/CNC_Woodworker.html

View Brandon Hintz's profile

Brandon Hintz

53 posts in 1666 days


#2 posted 04-23-2010 04:49 AM

PVC just needs to be properly grounded with a static wire

-- Potential is limited only by imagination

View Abbott's profile

Abbott

2570 posts in 1961 days


#3 posted 04-23-2010 04:51 AM

I have been running PVC duct for years without a ground wire with no issues. Sewer and Drain grade works fine.

-- Ohh mann...pancakes and boobies...I'll bet that's what Heaven is like! ♣ ♣ ♣ ♣

View PurpLev's profile

PurpLev

8476 posts in 2306 days


#4 posted 04-23-2010 05:00 AM

for a 2HP collector there is no need for grounding. it’ll only create more issues that it allegedly solves.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Tennwood's profile

Tennwood

103 posts in 1838 days


#5 posted 04-23-2010 05:13 AM

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.

-- Jim, SE Tennessee, "Don't spare the kindling Dear, we have plenty"

View unklegwar's profile

unklegwar

115 posts in 1871 days


#6 posted 04-23-2010 05:15 AM

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.

-- Eric ---- Wise Words T.B.D.

View MedicKen's profile

MedicKen

1599 posts in 2119 days


#7 posted 04-23-2010 05:51 AM

http://www.spiralmfg.com/

-- My job is to give my kids things to discuss with their therapist....medic20447@gmail.com

View Ivan 's profile

Ivan

170 posts in 2035 days


#8 posted 04-23-2010 04:42 PM

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

-- "Do it right the first time, you'll just kick yourself later..."

View PurpLev's profile

PurpLev

8476 posts in 2306 days


#9 posted 04-23-2010 04:47 PM

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.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View ABrown's profile

ABrown

102 posts in 1568 days


#10 posted 06-16-2010 05:19 AM

I’ve been using 4” metal HVAC ducting, you can get at home depot or lowes.

View tlr's profile

tlr

37 posts in 1455 days


#11 posted 12-05-2010 01:04 AM

I was at lowes today pricing PVC and galv. duct pipe and the duct pipe is far cheaper, has the of PVC gone up? Also is there any down side of using the galvanized duct pipe for the main runs?

View twiceisnice's profile

twiceisnice

95 posts in 1484 days


#12 posted 12-05-2010 10:59 AM

PENNSATATEIND.COM

View twiceisnice's profile

twiceisnice

95 posts in 1484 days


#13 posted 12-05-2010 11:00 AM

PENNSTATEIND.COM

View brtech's profile

brtech

673 posts in 1580 days


#14 posted 12-05-2010 11:39 PM

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.

View Stormin's profile

Stormin

192 posts in 1447 days


#15 posted 12-06-2010 04:20 AM

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.

-- I started off with nothing I have most of it left

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