Will a venturi work if the pressure behind it is

[forcedair]

it was pointed out to me that a venturi won't function if the pressure differential before and after the venturi is minimal. how much pressure differential is required for it to work?

ty,
john

 

[K^2]

Pressure differential is responsible for the flow of fluid/gas through the venturi. Differential you need depends on flow velocity you need, diameter/geometry of venturi, and properties of the fluid/gas involved. You would have to be far more specific to get a useful answer.