Simply connect the ProAir gun to an compressed air inlet 
Insert the empty airbag between two loads and inflate it with compressed air or with AtMet Max ProAir portable inflator
To deflate the airbag, insert the rear nozzle to the valve and push the trigger. The compressed air will suck the air from the bag resulting a fast and complete deflation
 
How venturi system works ?
 
A. Compressed air enters the inflator chamber through small nozzles at high velocity
B. The high velocity air stream creates vacuum that induces the air from outside enabling it to achieve unparalleled inflation speed.
C. The amplified airflow leaves the exit point.
 
Price doesn't include VAT (20%).