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Dust Collection - 4 Inch Hoses

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Forum topic by Ardubya posted 06-12-2019 03:44 PM 376 views 0 times favorited 10 replies Add to Favorites Watch
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Ardubya

61 posts in 1539 days


06-12-2019 03:44 PM

So I’ve been using a shop-vac and Oneida Dust Deputy and I’m losing the battle against dust big time. Even though I’m a hobbyist, I’ve decided to attack the problem head on. I’m working on an air cleaner unit that incorporates a squirrel cage blower, and I’ve just been given a Harbor Freight dust collector with a 4-inch hose connection.

Went online last night and found there are TOO MANY CHOICES for hoses. I know nothing about the different kinds of hoses that can be had. I’m looking to balance price with features/performance.

Can anyone suggest what kind and/or brand of hose I should use? I do know I would prefer the kind that is clear so you can see any clogs. But there are so many different kinds – PVC, vinyl, plastic… Help!

Thanks all!


10 replies so far

View ibewjon's profile

ibewjon

604 posts in 3188 days


#1 posted 06-12-2019 05:10 PM

I just picked a heavy guage clear hose from woodcraft. I really don’t think there is much difference for home use. Definitely clear to see clogs if I ever get one. Some are a heavier vinyl that others. I also want hose with a steel spiral, not plastic. The steel can be bonded at both ends to prevent shock.

View EarlS's profile

EarlS

2802 posts in 2743 days


#2 posted 06-12-2019 05:21 PM

There are plenty of top notch articles out there (Pentz, Oneida come to mind) but it all boils down to suction and air velocity at the dust source. Keeping the DC line (hose, pipe, whatever) as short as possible with minimal elbows, tees, and valves will give you the best conveyance to the DC. In conjunction with that, a properly sized hose for the piece of equipment is also important. Typically, a 4” hose (or 5”) will take care of most hobby sized equipment. A Dust Deputy will do a good job of knocking out the dust and chips to a certain size. It will use up some of the fan suction though which is why you don’t want to waste pressure drop on long hose runs or lots of elbows, or leaky lines. From there, the air passes through the fan. The system goes from negative pressure to positive pressure. The fan outlet usually passes through some kind of final filter to get rid of all of the really fine dust. Whether it is a pleated 1 micron filter or a 5 micron bag if the fine dust builds up on the filter, the pressure it takes to force the air through the filter increases which reduces the amount of suction you get on the inlet of the fan (blower). Keeping the filter clean will keep the fan suction pressure high.

PVC is smooth so you lose less pressure as the air flows through it. However, a short run of hose isn’t going to kill your fan’s suction.

A Wye or sweeping elbow will keep the pressure loss lower if you have to install a bend. Ideally, if you can eliminate slide gates you will also keep pressure loss to a minimum in the line. Make sure the equipment doesn’t have lots of places where air can leak in.

There are probably hundreds of posts on DC and as many or more blogs and reviews relating to DC. As I mentioned, Oneida does a decent job with their explanation. Pentz gets a bit long winded and lost in the weeds. Hopefully, this helps. FWIW – IAs an engineer I have designed and installed pneumatic conveying systems as well as DC systems for packaging lines. Still, take my advice, and others with a grain of salt. Your results may vary. The best thing you can do is be well informed and understand how these kinds of systems really work.

-- Earl "I'm a pessamist - generally that increases the chance that things will turn out better than expected"

View pottz's profile

pottz

5324 posts in 1379 days


#3 posted 06-12-2019 05:21 PM

ive gotten most of my 4” hose from rockler which is clear pvc with wire reinforcing and have never had a problem.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

View HackFabrication's profile

HackFabrication

136 posts in 107 days


#4 posted 06-13-2019 01:36 AM

Powertec hose off Amazon.

-- "In the end, it's all Hack..."

View diverlloyd's profile

diverlloyd

3511 posts in 2252 days


#5 posted 06-13-2019 01:43 AM

Pool supply store.

View Lazyman's profile

Lazyman

3433 posts in 1782 days


#6 posted 06-13-2019 01:56 AM

My only complaint about the clear wire reinforced hoses is that they can be annoying when the suction causes them to contract. Not a big deal if you are just using them to connect between 2 stationary points but can be pretty annoying when connected to a mobile tool or with attachments for cleaning up.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View bigblockyeti's profile

bigblockyeti

5746 posts in 2116 days


#7 posted 06-13-2019 02:33 AM

I bought 25’ of 4” hose “used” (new) off amazon for $39.86. I think it’s supposed to be used for confined space ventilation as it has a slick plastic spiral around the outside to mitigate abrasion. It’s slightly more expensive when sold new but at the time I wrote this, there was a used option for $63.53: https://www.amazon.com/gp/product/B0050IFC28/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

-- "Lack of effort will result in failure with amazing predictability" - Me

View hairy's profile

hairy

2853 posts in 3927 days


#8 posted 06-13-2019 11:51 AM

I use this. https://www.grizzly.com/products/Woodstock-4-x-20-Clear-Hose/D4207

-- My reality check bounced...

View Greg66's profile

Greg66

30 posts in 53 days


#9 posted 06-13-2019 04:38 PM

It is highly unlikely that a shop vac will move enough cfm’s to work with the dust deputy and still collect enough dust to be helpful.

View KettleWorkshop's profile

KettleWorkshop

39 posts in 36 days


#10 posted 06-13-2019 05:23 PM

Personally, I am a visual guy and prefer to see stuff as a means of learning.
If you are too, I would suggest checking some of the big youtubers out whom have full shops (April Wilkerson, Jay Bates, Bent’s Woodworking). I know ive seen videos from each of them in terms of their DC Systems.

Id start there to at least get a visual idea and some base information. Armed with that, I feel, you’d be better equiped to start deep diving into specific parts of DC that require a base level of understanding.

-- If you don't throw out the original design at least 2 times, you aren't finding all the imperfections.

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