Fan curve for shop vac or vacuum cleaner?

[Perry Holbrook]

Anybody know where I can find a fan curve for a small shop vac or even household vacuum cleaners?

I'm working a machine design/ improvement that many of us use that may use a small vacuum/blower unit. Surplus Center has a small used 3 stage vacuum unit that may work with specs of 33 cfm at 0" H20 and max of 15". I need to know how this compares to a small commercial vacuum and can't seem to find any specs for them.

Just thought someone may have a source, if not, I'll give someone a call.

Thanks, Perry

[Noah Katz]

Before just getting a Fein, I did a lot of research on central vac systems, some of which include a small cyclone separator.

One of the web sites has curves for many brands. I forget which site, but if you google "central vacuum" it should be on the 1st page of hits.

But I can tell you 90"/100 cfm is typical.