I've gotta say, I've pulled an indicated 30" with my Harbor Freight venturi pump. My gauge was actually pegged. I've heard bad things about the venturi's, but for $15 (and $10 if you get it on sale like me :) ) its fine. Now, the caveats - I was using shop air with some insane amount of CFM of flow at 90 PSI. My lame little 2.7CFM compressor only pulls it to 15" or so. I'm also at sea level for what its worth.
Tjohn 82 300 SD On 8/8/05, Dave M. <[EMAIL PROTECTED]> wrote: > Joe, > > On a side note, all this discussion about pulling less than 29" vacuum > to me seems absurd... if you want the system evacuated properly with > as much moisture as possible boiled out, you're not going to get that > with a venturi pump (27-28" max)(snip) >
