I have a Penn State DC1-B Dc with 5 micron bags. I need to make a 22 foot
run with about a 4 foot drop at each end. Should I use 5" or 4" duct for
this? Thanks for any help you can give.
--
Bill Rittner
R & B ENTERPRISES
Manchester, CT
[email protected]
"Don't take this life too seriously.......nobody
gets out alive" (Unknown)
Remove "no" to reply
Bill Pentz has a very informative site and should dispell any misinformation
that you have already gathered.
try this link:
http://cnets.net/~eclectic/woodworking/cyclone/index.cfm
"Bill Rittner" <[email protected]> wrote in message
news:fsoGb.45607$hf1.16938@lakeread06...
> I have a Penn State DC1-B Dc with 5 micron bags. I need to make a 22 foot
> run with about a 4 foot drop at each end. Should I use 5" or 4" duct for
> this? Thanks for any help you can give.
>
> --
> Bill Rittner
> R & B ENTERPRISES
> Manchester, CT
>
> [email protected]
>
> "Don't take this life too seriously.......nobody
> gets out alive" (Unknown)
>
> Remove "no" to reply
>
>
In article <[email protected]>, [email protected]
says...
... snip
>
> Which brings me to MY question: what do you guys use for five-inch duct? I
> can find 5'' spiral ductwork but that stuff is so expensive. I'll use it if
> I have to but ain't there any PVC or anything like that out there in five-
> inch sizes?
>
Call around to heating / air conditioning places. I found a place in
Tucson that manufactures 5" duct, including the spiral pipe. Price was
on the order of $12 / 10 foot length for the pipe and $11 to $16 for
elbows; one cross (5 5 5-5) was $25. Got my blast gates from Penn
State. I'm sure most larger cities (wouldn't call Tucson a major city)
have similar places.
> Dan
>
Dan said:
>Which brings me to MY question: what do you guys use for five-inch duct? I
>can find 5'' spiral ductwork but that stuff is so expensive. I'll use it if
>I have to but ain't there any PVC or anything like that out there in five-
>inch sizes?
5" heating duct. Smooth inside, metal for no static, and while not as
cheap as 4" PVC, cheaper than other alternatives. I have never seen
it at the BORG, however. Comes stacked sort-of flat, you roll it up
and snap it together yourself. I don't know if I would use spiral,
unless it was very smooth on the inside. FWIW,
Greg G.
A work buddy of mine is a heating / air conditioning mechanic and i
won't see him til monday... he knows all about duct work... anyway, a
90 degree bend in duct work is equal to 22 feet of straight run.
Resistance, in other words.
Because you've got a long run with 2 bends I'd opt for a 5 in duct, at
least. You might do a search for CFM... Cubic Feet per Minute... get
yourself some formula's and work out a system that will do the job
intended. It would seem to me that a micron filter will clog very
quickly and render itself inefficient quickly because fine sawdust
will just embed itself in that kind of filter.
The larger the duct work the slower the velocity for the same fan /
vacume output. ( CFM rating )
I hope some of this helps.
On Wed, 24 Dec 2003 17:30:37 -0500, "Bill Rittner" <[email protected]>
wrote:
>I have a Penn State DC1-B Dc with 5 micron bags. I need to make a 22 foot
>run with about a 4 foot drop at each end. Should I use 5" or 4" duct for
>this? Thanks for any help you can give.
In article <[email protected]>, Greg G. says...
> Dan said:
>
> >Which brings me to MY question: what do you guys use for five-inch duct? I
> >can find 5'' spiral ductwork but that stuff is so expensive. I'll use it if
> >I have to but ain't there any PVC or anything like that out there in five-
> >inch sizes?
>
> 5" heating duct. Smooth inside, metal for no static, and while not as
> cheap as 4" PVC, cheaper than other alternatives. I have never seen
> it at the BORG, however. Comes stacked sort-of flat, you roll it up
> and snap it together yourself. I don't know if I would use spiral,
> unless it was very smooth on the inside. FWIW,
>
The metal spiral pipe I bought is smooth on the inside -- the spiral
is the mechanism by which the pipe is closed, the interior has a gore
liner that makes it smooth.
On Thu 25 Dec 2003 06:10:35a, "William Prisavage"
<[email protected]> wrote in
news:%[email protected]:
> Bill Pentz has a very informative site and should dispell any
> misinformation that you have already gathered.
> try this link:
> http://cnets.net/~eclectic/woodworking/cyclone/index.cfm
I was going to suggest that too. I believe he says that a smaller, ie not a
huge 220V monster pump should have no less than 5 inch diameter and no
bends greater than 45 degrees at a time.
Which brings me to MY question: what do you guys use for five-inch duct? I
can find 5'' spiral ductwork but that stuff is so expensive. I'll use it if
I have to but ain't there any PVC or anything like that out there in five-
inch sizes?
Dan
On Thu 25 Dec 2003 10:37:10a, Greg G. wrote in
news:[email protected]:
> 5" heating duct. Smooth inside, metal for no static, and while not as
> cheap as 4" PVC, cheaper than other alternatives. I have never seen
> it at the BORG, however. Comes stacked sort-of flat, you roll it up
> and snap it together yourself.
Okay, so I should be able to find it at a place that sells heating
supplies. I think there's a fair amount of those around here. Thanks.
Haven't done much local research yet. Just bought the DC and won't even be
putting it together for a day or two.
>I don't know if I would use spiral,
> unless it was very smooth on the inside. FWIW,
What I was thinking of was from a dedicated DC supplies seller, so it's
probably got good sucking characteristics :-) But it has to be shipped and
it's two or three times the cost of 5'' heating duct according to the few
minutes of googling I just did, so I won't be checking it any further. :-)
Thanks, Greg.
Dan
--
When a man finds a conclusion agreeable, he accepts it without argument,
but when he finds it disagreeable, he will bring against it all the forces
of logic and reason.
Thucydides
On Thu 25 Dec 2003 01:02:26p, Mark & Juanita <[email protected]> wrote
in news:[email protected]:
> Call around to heating / air conditioning places. I found a place in
> Tucson that manufactures 5" duct, including the spiral pipe. Price was
> on the order of $12 / 10 foot length for the pipe and $11 to $16 for
> elbows; one cross (5 5 5-5) was $25. Got my blast gates from Penn
> State. I'm sure most larger cities (wouldn't call Tucson a major city)
> have similar places.
>
Well thank you very much, folks. This was very helpful.
I'm in Wisconsin, near Madison, so finding a heating supplier probably
won't be much of a trick. :-) I'll get on it right soon.
Dan
Bill Rittner said:
>I have a Penn State DC1-B Dc with 5 micron bags. I need to make a 22 foot
>run with about a 4 foot drop at each end. Should I use 5" or 4" duct for
>this? Thanks for any help you can give.
I would hazard a guess that it has insufficient air flow to keep
material in suspension with 5" or larger pipe. It's a 1 HP job?
Advertised air flows are generally overinflated.
Have you inquired from the vendor?
There is a really good site with formulas for computing this sort of
thing, but I can't remember the address.
Here is another with a good overview, but it is rather general:
http://www.apscoeng.com/DustColectorFAQConcerns0001.htm
Greg G.
The local Home Depot, here in Manchester, CT, has it.
--
Bill Rittner
R & B ENTERPRISES
Manchester, CT
[email protected]
"Don't take this life too seriously.......nobody
gets out alive" (Unknown)
Remove "no" to reply
<Greg G.> wrote in message
news:[email protected]...
> Dan said:
>
> >Which brings me to MY question: what do you guys use for five-inch duct?
I
> >can find 5'' spiral ductwork but that stuff is so expensive. I'll use it
if
> >I have to but ain't there any PVC or anything like that out there in
five-
> >inch sizes?
>
> 5" heating duct. Smooth inside, metal for no static, and while not as
> cheap as 4" PVC, cheaper than other alternatives. I have never seen
> it at the BORG, however. Comes stacked sort-of flat, you roll it up
> and snap it together yourself. I don't know if I would use spiral,
> unless it was very smooth on the inside. FWIW,
>
>
> Greg G.