Billy, I was working with a mechanical engineer a couple years back. He told me it was easy but it didn't turn out that way. I couldn't use PVC pipe with glued in fittings because of the air flow. The Venturi had to have smooth transitions from large to small dimensions. We were going to use a 3D printer to make the Venturi but it was to large for the printer we had access to.
I'm sure it can be done
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