Originally Posted by
keith ouellette
When i was inquiring about duct size i was warned away from using the larger pipe because of loosing pressure (or something to that effect, I can't remember the exact words). My system is a 1200 cfm and it pulls everything quite well. Is there any truth to what I was told? (I might have to get some 6in pvc)
Unfortunately, no, Keith. You're system is not going to provide it's best REAL CFM performance with the smaller duct. For a typical mass-market single stage "1200 CFM" DC, that would be about 600 CFM, give or take. 4" duct maximally can handle about 300-350 CFM tops. Duct work should be optimized to the blower of your system as well as to the individual tools.
Last edited by Jim Becker; 12-11-2007 at 5:47 PM.
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