The maximum amount of wind and air pressure are under ideal conditions "Inflatable Air Blower" product description, that fan out into the air and no air volume (maximum air flow) pressure difference between the air condition, and a fan to a closed gas chamber Desk until the difference between the air volume is zero in the state of the gas chamber and the outside atmospheric pressure (maximum static pressure). "Inflatable Air Blower" are not two isolated performance, but restricts each other, the relationship is the relationship between fluid mechanics typically between velocity and pressure - the pressure difference with the air volume (ie, specifically fins drag ) increases with decreasing degree of mutual restraint between the two depends on "Inflatable Air Blower" fan shape and design of the overall structure. Wind, regular measurement of air pressure in the need to use wind tunnel.