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Spray guns are widely used in vehicle body repair shops when re-spraying a vehicle with liquid coating media, e.g., primer, paint and/or clearcoat. 20 Typically the spray gun is made of a solid metal body and an integral handle, which are bored out to form a compressed air inlet, air passageways, a liquid nozzle assembly, and to accept a trigger mechanism for releasing the liquid to an air cap for discharge of the liquid in the form of an atomized spray. 2

The liquid spray gun platforms described herein may have fan control air passages, center air passages, and/or air supply manifolds that can be described with respect to relative volumetric relationships and/or dimensions. 48The spray gun platforms described herein may have significantly increased air passage dimensions. 49Although the actual volumes of the different features in the spray gun platforms may vary in different embodiments, the volumes of the features in the spray gun platforms may be characterized relative to each other. 50For example, in some embodiments, the fan control air passage in the spray gun platform may have a volume that is larger than a volume of the center air passage. 51In some embodiments, the volume of the fan control air passage may be 120% or more of the volume of the center air passage. 52I