overshoot CFM on the compressor, not the spray gun.This information is referred to as CFM (cubic feet per minute) and you would want to aim for a compressor 25% above the CFM requirement of the gun for most use cases, 40% for commercial applications. HVLP air flow requirement differ from model to model but they are on the lower end of what spray guns tend to use. You want a compressor to supply enough air that even while you are spraying you are using less air than the pump is supplying, because of this, the compressor will be able to have a rest period in between running cycles. Most air compressors have relatively low duty cycles meaning they cannot run for hours on end unless its a commercial type of machine. The reason you still need a large compressor is that of the duty cycle of the compressor. ![]() HVLP spray guns are great that they use less air flow than older guns but they do still need plenty, some people have this misconception that these new HVLP gun only need a tiny DIY compressor… wrong. If you decide to go with the spray guns that need an air compressor there are some key things you need to understand.
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