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Where can I get PVC/Ductwork for dust collector?

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Forum topic by BarryAbrams posted 09-18-2015 04:53 PM 711 views 0 times favorited 7 replies Add to Favorites Watch
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BarryAbrams

1 post in 444 days


09-18-2015 04:53 PM

I’ve a new owner of a Harbor Freight Dust Collector. I’m interested in installing piping in my workshop to hook up a couple of the tools to it.

From what I’m reading hear and other places, I should install a 5 or 6” PVC or metal duct from the DC most of the way, then branch off to 4” to the tools creating the dust. I plan on modifying the HF DC with the usual upgrades: a Wynn Filter and some sort of separator. What’s the maximum length of a run I should attempt? I can get the run to be pretty straight… all the tools are mostly in a diagonal line.

Where can I buy 5” or 6” PVC? I’ve been to all the big box stores around me, but none of them really have anything over 4”, and all of it’s schedule 40. I can’t find any schedule 20 stuff.


7 replies so far

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splintergroup

827 posts in 684 days


#1 posted 09-18-2015 04:58 PM

I had to look far and wide for 6” PVC. I first went to a plumbing supply house, which did not sell to the ‘public’. They did however point me to the place they got their large PVC from (which I would never had found otherwise).

If you strike out on the Sched 20 PVC, you should consider HVAC duct. Not as easy to work with as PVC, but given your main trunk line mostly being straight, it would be do-able. A significant portion of my 2HP cyclone system is done with 6” metal duct.

View Fred Hargis's profile

Fred Hargis

3932 posts in 1955 days


#2 posted 09-18-2015 05:48 PM

You won’t find 5” PVC, and like Splintergroup said the 6” isn’t all that easy to come across. If you have Menard’s in the area, they carry the 3034 which is a bit heavy for ducting, but it will work and goes on sale sometimes for about $20/10’. What you really want is ASTM 2729 and it have 1/2 dozzen names to describe it. A plumbing supply (like Hughes Supply) may have it, or try the HVAC. the biggest problem with it may be finding wyes instead of tees.

-- Our village hasn't lost it's idiot, he was elected to congress.

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AZWoody

693 posts in 686 days


#3 posted 09-18-2015 05:52 PM

Not sure but you might want to make sure the HF dust collector can move enough air to be able to use 6” ducting.

If the volume is not high enough, the velocity inside ducting that size will slow down and it will become ineffective.

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splintergroup

827 posts in 684 days


#4 posted 09-18-2015 08:00 PM



Not sure but you might want to make sure the HF dust collector can move enough air to be able to use 6” ducting.

If the volume is not high enough, the velocity inside ducting that size will slow down and it will become ineffective.

- AZWoody

True dat!

Another consideration for the HVAC plumbing is the accessories (wyes, ells, etc.) are designed for air flow.

View rwe2156's profile

rwe2156

2190 posts in 942 days


#5 posted 09-18-2015 11:48 PM

Find a commercial plumbing suppy that will sell to a cash customer.

Or

Make friends with a plumber who can order it under his account.

-- Everything is a prototype thats why its one of a kind!!

View dhazelton's profile

dhazelton

2324 posts in 1758 days


#6 posted 09-19-2015 12:11 AM

What about sewage and drainage pipe? Right diameter, cheap, lot’s of options as far as elbows and wyes and such. look in HD or Lowes, comes in solid or the kind with holes for the bottom of french drains.

View WoodES's profile

WoodES

36 posts in 1153 days


#7 posted 09-19-2015 03:06 AM

I bought 6” drainage pipe and fittings from a landscape supplier. It is light material, but plenty for the 2hp DC that I have.

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