dustfaq outdated? Filter factor for pleated cannisters?


Hi all,
I'm getting close to buying a DC system that will be for a fixed ducting arrangement in my home/hobby shop.
I'm leaning heavily towards the Penn State DC2000BCF - has the 1um pleated cannister filter up top (83 sq.ft. surface area), plastic bag below.
In calculating my SP requirements, the dust FAQ (yes, I see it's dated May 2000) at http://mypeoplepc.com/members/dstig/dustfaq_2.html
mentions the filter factor. Says a 30 micron bag counts 1" SP, BUT for a 5 micron bag you should deduct 30% from the final working CFM, and a 1 micron bag cuts the effective CFM in half!?!? ... Can that be right? Or is that assuming a 1 micron BAG - with its limited surface area - as opposed to a pleated cannister?
I spoke w/ Bill at PSI, and asked him what the equiv. SP-inches is for the exact cannister for the DC2000. He had to check and call me back, and did, and said to allow/factor one-HALF inch SP for the filter factor.
That's a helluva lot different (better) than a 50% cut in effective CFM.
I see in the FAQ that the author seems to address this in the "Better Filter Bags" section; and he makes special note of the Onieda Cyclone w/ pleated filter, "unlike any system currently available."
Can someone help clarify this for me?
Thanks, Chris
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Site Timeline

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.