This option for the EconoMAX™ bulk bag filling system is used when you would prefer to use a plant supplied compressed air source to perform the inflation of the bag prior to the filling cycle. This will be done using a 3/4” NPT pneumatic valve with the actuation of the valve done using a manual style “joystick” type pneumatic valve.
The flow path for the air is the annular opening between the outer diameter and the inner diameter of the fill spout which is the same opening as the dust removal path.
Typically, this is isolated with the (IV option) which isolates the blower from dust collection during the bag inflation cycle then switches to the dust collection position after filling has begun.