How does the venturi work?
What, you've never heard of the Bernoulli principle? In the mid 1700's, Daniel Bernoulli developed a theorem which shows that a transducer inside a hollowed chamber produces a vacuum by forcing compressed air through a limiting orifice into a channel. As the air exits the orifice it expands, increasing in velocity to supersonic speeds before entering the channel section. This creates a vacuum or negative pressure at the vacuum inlet port located between the orifice and channel section.
Mr. Bernoulli based his discovery on the work of Giovanni Battista Venturi, an Italian physicist who created a device for speeding the flow of the fluid, by constricting it in a cone-shaped tube.
How does the Project: V2 system work?
Think of it this way... the Mac valve is a gate that controls the flow of air from the air compressor only when the vacuum controller recognizes the need for additional vacuum. The venturi pulls vacuum very quickly. In fact the reservoirs tanks will achieve full vacuum in just 20 seconds. After that, the compressed air is shut off automatically.
Giovanni Battista Venturi