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4 inch pvc for dust collection?

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Forum topic by DocSavage45 posted 02-21-2016 07:34 PM 1110 views 4 times favorited 48 replies Add to Favorites Watch
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DocSavage45

7708 posts in 2310 days


02-21-2016 07:34 PM

Topic tags/keywords: question dust collection

Hey LJ’s!

Looking for suggestions and your experience in choosing 4 inch pvc piping for dust collection and how it works for you, OR why you wouldn’t use it?

I bought a 1.5 HP 1200 cfm Delta dust collector many years ago before I was savvy about what I would be doing in my shop. since then I have built a 50 gallon Thein chip collector which sits next to the delta. At present I am running 50 ft of 4 inch corrugated flex tubing and attaching it to my shop equipment ONE AT A TIME.

Had planned on using 4 inch drain pipe with proper grounding with different ports around my shop. I have purchased the black plastic elbows in the past! And assorted components to eventually put a dust collection system in.

Now I am wondering if I’ve been going down the wrong road.

Your input always helps me decide.

What are your thoughts and opinions?

Thanks for your assistance!

-- Cau Haus Designs, Thomas J. Tieffenbacher


48 replies so far

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conifur

955 posts in 619 days


#1 posted 02-21-2016 07:56 PM

I do believe it has to be Schedule 20 not 40, to fit regular 4in DC fittings, and in WI impossible to find.

-- Knowledge and experience equals Wisdom, Michael Frankowski

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DocSavage45

7708 posts in 2310 days


#2 posted 02-21-2016 08:11 PM

Thanks! I’ll keep that in mind.

-- Cau Haus Designs, Thomas J. Tieffenbacher

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a1Jim

115207 posts in 3045 days


#3 posted 02-21-2016 08:12 PM

Hi Tom
I’ve used Schedule 20 for 25 years without a ground and no problems.The stories about static discharge causing an explosive seems to be a fallacy . You do have to make an adaptor for store bought blast gates, otherwise you can not get you house clamp to hold the blast gates tight enough. I just cut a 1 1/2” section of the 4” and cut a slot across it to fit inside the 4” PVC where blast gates and other connectors go and clamp with a big hose clamp.

-- http://artisticwoodstudio.com Custom furniture

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JAAune

1646 posts in 1784 days


#4 posted 02-21-2016 08:16 PM

I chose all metal pipe just to make sure I avoided all issues with insurance. Though I’m running a small shop and it’s likely nobody cares, I still make a lot of effort to achieve commercial standards with everything.

If you aren’t running a business, I don’t see any downside to pvc pipe other than the cost of fittings, the weight and the annoyance factor of getting zapped by static discharges.

-- See my work at http://remmertstudios.com and http://altaredesign.com

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firefighterontheside

13529 posts in 1324 days


#5 posted 02-21-2016 08:29 PM

I just ran all schedule 20 in my shop. It’s working great for me. At the farthest reach I’ve reduced to 2.5” for my drum sander and spindle sander. I think you will find an increase of velocity with getting rid of most of that flex tube. I have about 3’ of flex going to each machine, but the rest is 4” pipe. There is a lot of friction loss in the flex tube.

-- Bill M. "People change, walnut doesn't" by Gene.

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DocSavage45

7708 posts in 2310 days


#6 posted 02-21-2016 08:33 PM

Bill,

Thanks, I’m thinking along those lines.

-- Cau Haus Designs, Thomas J. Tieffenbacher

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DocSavage45

7708 posts in 2310 days


#7 posted 02-21-2016 08:37 PM

JAAnne,

Plan on grounding. Trying to deal with cost as I’m not making any money Have 6 inch stove pipe. Insurance? I’ve got a small wooden barn filled with wood?

-- Cau Haus Designs, Thomas J. Tieffenbacher

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Andre

1023 posts in 1274 days


#8 posted 02-21-2016 08:48 PM

I ran all sch 20 white PVC, 2 runs with blast gates on every outlet with a similar machine. The Planer and tablesaw run through a Veritas separator on a large trash barrel. Only static I get is on a 20ft length of 2.5” flex hose that is used for clean up.

-- Lifting one end of the plank.

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firefighterontheside

13529 posts in 1324 days


#9 posted 02-21-2016 09:05 PM

The pipe and fittings were cheap, it’s the gates that cost about $15 each. I wouldn’t use the plastic gates because they get clogged with chips.

-- Bill M. "People change, walnut doesn't" by Gene.

View Bricofleur's profile

Bricofleur

1361 posts in 2661 days


#10 posted 02-21-2016 11:27 PM

Tom, My dust collection pipe system is running on 4” (think main) and 3” (think branches) PVC pipes, no ground and no problem. All cheap plastic dust ports. It’s been free of spark and static for over a decade. Make sure you don’t use 90° elbows, but only two 45° instead. The heart is the two phases type powered by a 2 HP 220V motor. Since I added a pleated canister, it sucks like hell ! Remember that flex hose reduces airflow a lot.

Best,

Serge,

http://atelierdubricoleur.wordpress.com

-- Learn from yesterday, work today and enjoy success tomorrow. -- http://atelierdubricoleur.wordpress.com

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DocSavage45

7708 posts in 2310 days


#11 posted 02-22-2016 12:37 AM

Serge,

I’ll keep the no 90 degree pipes in mind! Already have copper ground wire. Thanks!

-- Cau Haus Designs, Thomas J. Tieffenbacher

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DocSavage45

7708 posts in 2310 days


#12 posted 02-22-2016 12:39 AM

Bill I ordered metal blast gates waaaaaay back. Sitting in a box!

-- Cau Haus Designs, Thomas J. Tieffenbacher

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DocSavage45

7708 posts in 2310 days


#13 posted 02-22-2016 12:40 AM

Andre,

Thanks for your input.

-- Cau Haus Designs, Thomas J. Tieffenbacher

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USAwoodArt

245 posts in 410 days


#14 posted 02-22-2016 02:06 AM

I’ve used the pvc pipe for years. I initially ran metal pipe when i first built my shop and it is good but costlier and more difficult to cut to size when it needs cuttin. As i added more machines to the shop that needed connecting to the dust system I started using schedule 20. It is much easier to use and cut to size. There are many adapters available to make it all fit together. I use the Veritas self cleaning blast gates exclusively. They are the best i have found.

-- Wood for projects is like a good Fart..."better when you cut it yourself"

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firefighterontheside

13529 posts in 1324 days


#15 posted 02-22-2016 02:16 AM

I figured out that if I make about 10 cuts in the end of the schedule 20 about 1” in I can use a clamp and clamp it right on the blast gate.

-- Bill M. "People change, walnut doesn't" by Gene.

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