Thanks for your response
http://www.quickdraft.com/venturihome.html
Venturi Exhauster's advantage over in-line fans is their unique design with no moving parts in the flow path....
Quickdraft shows part of what I need to have but I would like to build it in our plant but I need design specs...
Have you had no response?
I need to know how to design a gas venturi with less than 1 hp input and 1500 cfm output while drawing 500 cfm on the vacuum side
Any links? ideas?