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Forum topic by Walt posted 09-19-2014 06:05 PM 939 views 0 times favorited 7 replies Add to Favorites Watch
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Walt

213 posts in 2305 days


09-19-2014 06:05 PM

Plan to upgrade dust collection. Currently ductwork is flex tubing I want to use 4” PVC . MY question is which is better schedule 20 or 40 PVC welcome any suggestions
Walt.

-- Walt Wilmington Delaware, http://waltlumley@yahoo.com


7 replies so far

View RobS888's profile

RobS888

1986 posts in 1311 days


#1 posted 09-19-2014 06:42 PM

I use this:

http://www.homedepot.com/p/Advanced-Drainage-Systems-4-in-x-10-ft-Triplewall-Pipe-Solid-4550010/100135310

lighter and less expensive than sch 40. The only problem is you can’t glue it, so I use the rubber unions.

-- I always suspected many gun nuts were afraid of something, just never thought popcorn was on the list.

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Walt

213 posts in 2305 days


#2 posted 09-19-2014 06:48 PM

Rob thanks for the info. I do think I want to glue the joints to prevent as many leaks as possible

-- Walt Wilmington Delaware, http://waltlumley@yahoo.com

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RobS888

1986 posts in 1311 days


#3 posted 09-19-2014 06:57 PM

I have mine in the basement and have made changes, so it has worked out well. I had some of the pipe left over from a drainage project, so it was there to use. We moved my wife’s lathe, so it had to be re-routed to another part of the basement and it was mostly unscrewing the unions to reconfigure.

-- I always suspected many gun nuts were afraid of something, just never thought popcorn was on the list.

View English's profile

English

517 posts in 943 days


#4 posted 09-19-2014 08:42 PM

You don’t want to glue the PVC, you need to be able to take it a part if it plugs up. And sooner or later it will. You can go down to as low as schedule 10 PVC with a normal DC that produces below 20” of static.

-- John, Suffolk Virgina

View OhioMike's profile

OhioMike

73 posts in 1629 days


#5 posted 09-19-2014 08:55 PM

Walt,

I used PVC that is designated for sewer and drain use. The technical designation is ASTM 2729. I used it because it’s thinner, cheaper and lighter than “schedule” PVC but still plenty strong enough for dust collection applications. Note that sewer and drain pipe requires sewer and drain fittings. Regular schedule 40 fittings won’t work.

There’s nothing wrong with using schedule 40, it’s just heavier and more expensive.

I assembled the PVC without glue and used 3/4” self-tapping sheet metal screws to pin the joints together. Very glad I did because I’ve rearranged the shop twice since then.

Mike

View Walt's profile

Walt

213 posts in 2305 days


#6 posted 09-19-2014 09:02 PM

Good point English I will do as Ohiomike suggested an use screws
Thank for the input guys

-- Walt Wilmington Delaware, http://waltlumley@yahoo.com

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English

517 posts in 943 days


#7 posted 09-19-2014 10:14 PM

You can seal the joints with HVAC aluminum tape or a light coat of HVAC mastic. With either you can still get it a part to clear plug ups

-- John, Suffolk Virgina

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