On Dec 5, 11:02*pm, Don Foreman wrote:
On Sun, 05 Dec 2010 21:23:24 -0500, Bob Engelhardt

wrote:
Bob La Londe wrote:
http://www.amazon.com/Single-Sided-V...IHR61U/ref=sr_....

How does this create vacuum with compressed air? *Venturi affect?

If its a venturi wouldn't it use a huge volume of air?

Yes and yes.

Don't know about this clamp, but the similar device sold by HF for
removing moisture from *A/C systems is quite noisy. *http://www.harborfreight.com/air-vac...-and-r12-conne...

Of course! Sound cannot travel in a vacuum, so in order to create the
vacuum, all the sound has to be blasted out of the air.
It's simple physics, I am surprised you didn't know that.