So, how do they work?Īnd here’s the reason I write this. It looks like this: This is an external MAC valveīoth built in and external MAC valves work the same. The airbrush pictured above has a MAC valve built into it, but you can also buy an external MAC valve to place at the end of your air hose before the airbrush. The MAC valve is the little knob under the cup just behind the nozzle. That is the MAC Valve and how it works.įirst, what is a MAC valve? Well quite simply, a MAC valve is a Micro Air Control valve. You can see one that’s built onto the airbrush here: So following some hilarious internet cat fighting I felt that I need to address a huge misunderstanding in the hobby/airbrushing community. It is meant to help you have a better understanding of how your airbrush works.
Disclaimer: Science follows, and none of it really is going to change anything you are doing with your airbrush.
