DC conversion question

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Forum topic by eflanders posted 03-31-2016 01:02 PM 376 views 0 times favorited 2 replies Add to Favorites Watch
View eflanders's profile


84 posts in 1269 days

03-31-2016 01:02 PM

Topic tags/keywords: dust collection dc thien fittings

I’m now committed to converting from flex tubing to hard pipe for my DC system. I’ve already bought 4” schedule 20 pipe and the 45’ elbow fittings accordingly. I’ve also built a Thien separator that sits atop a 20 gal steel garbage can. Next I have modified my Delta DC so that the impeller outlet now blows straight into the (added) Wynn filter and bag. Here are my questions:

1). What’s the best way to hook up the impeller intake to the separator? The impeller intake is currently 6” or it also has the standard 6-4” wye fitting. My separator fittings are currently 4”.

2). Given that I have 4” separator fittings, should I somehow adapt to 6” ? I do not think I can fit 6” connectors on this size garbage can…

Your advice is appreciated!

2 replies so far

View Fred Hargis's profile

Fred Hargis

3841 posts in 1912 days

#1 posted 03-31-2016 02:04 PM

I wouldn’t convert to 6” on the separator, at least not at first. Just go with what you have and see how it works.

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

View joey502's profile


482 posts in 936 days

#2 posted 03-31-2016 02:29 PM

I wouldn t convert to 6” on the separator, at least not at first. Just go with what you have and see how it works.

- Fred Hargis

I agree. You have made a lot of changes to your system and should see better performance. When you change multiple variables without a test after each it is hard to tell how much increase in performance you got from each upgrade. Fire it up and then decide if there is anything you feel could be improved.

Be sure to get a good seal between your baffle and chip bin.

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