Dust Collection Fittings

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Forum topic by Kevin posted 898 days ago 1844 views 0 times favorited 7 replies Add to Favorites Watch
View Kevin's profile


445 posts in 1807 days

898 days ago

Topic tags/keywords: duct work dust collection dust collectors woodshop workshop

What do you guys use to connect the 4” flexible hose to 4” pvc pipe? Obviously I want the smoothest curves and transitions possible when designing the duct work.

I attached a visio drawing, the red shows the current layout for ductwork. If that’s not appropriate someone please advise. I want it done right :)

I’m thinking of going from the dust collector with the 4” pipe up the wall then with a 90 degree long elbow going to the left along side the ceiling wall for 4-6 feet connecting to a wye. From that point it goes down to a planer and across the ceiling to the table saw and jointer. All machines have a 4” opening that the hose will connect to. I plan to run a short 4” hose from the pvc to the machine at each location.

Does this sound like the proper way to run the ductwork to the machines and if so what about the fittings because I know the 4” pvc isn’t going to connect with the 4” hose.

What’s your thoughts?



-- Williamsburg, KY

7 replies so far

View Loren's profile


7260 posts in 2250 days

#1 posted 898 days ago

You’ll be fine with your ducting plan running one machine at a time.

Flexible hose fits over the end of a plastic blast gate. You can
also stick it into one end of a PVC sleeve joint used to joint two
lengths of 4” PVC.


View Kevin's profile


445 posts in 1807 days

#2 posted 898 days ago

Thanks Loren,

That’s what I plan to do is only run 1 machine at a time. It’s just in the shop so that’s good to hear. On another note, put the blast gates closer to each machine or closer to the wye’s?


-- Williamsburg, KY

View ducky911's profile


201 posts in 1391 days

#3 posted 897 days ago

I have flex hose that with some work,...tug and twist i can put on a metal air gate . The other side fits nice in the 4” pvc sewer pipe. So if you pipe down with your solid pipe to a hieght that you want you gate than you can do like i have. I like the clear 4” pipe much beter than the black stuff

Two 45s would be better on your main run vs a 90

View MedicKen's profile


1599 posts in 2064 days

#4 posted 897 days ago

If you are using PVC for the main runs make sure you ground the system. If not you may run the risk of a static discharge and a fire.

-- My job is to give my kids things to discuss with their

View Kevin's profile


445 posts in 1807 days

#5 posted 896 days ago

Thanks guys.

I think i’ve got it planned out now with the help from all of you. I do plan to ground the system just to be safe. I have seen where people run a copper wire around the pvc in on the outside and inside and connect it to a screw. Whats your thoughts on this?


-- Williamsburg, KY

View pintodeluxe's profile


3272 posts in 1415 days

#6 posted 896 days ago

There is a stock connector at Home Depot that slips right in.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View SASmith               's profile


1547 posts in 1589 days

#7 posted 895 days ago

Here is what I use for flexible hose. It fits perfectly over 4” S&D. Not sure how well it fits blast gates though.
I make my own blast gate using 4” S&D for the inlet and outlet.

-- Scott Smith, Southern Illinois

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