Why is it necessary to have a vacuum-assist nozzle in vapor recovery systems?

A vacuum-assist nozzle in vapor recovery systems plays a key role in minimizing air pollution. This system captures vapors that would otherwise escape into the atmosphere during refueling, thereby reducing harmful emissions that contribute to air quality degradation. When a vehicle’s fuel tank is filled, the vapors created by the displacement of gas can be substantial. The vacuum-assist nozzle helps draw these vapors back into the storage tank rather than allowing them to vent outside, effectively mitigating pollution and ensuring compliance with environmental regulations.

In contrast, while operational costs, fuel delivery speed, and legal requirements may be relevant factors in the broader context of fuel handling and vapor recovery, the primary function of the vacuum-assist nozzle directly pertains to pollution control. It is specifically designed to address environmental concerns by capturing fugitive emissions, which is why it is essential for maintaining cleaner air standards.