My compressor came with an inbuilt moisture trap, but found I would still sometimes get the dreaded water spitting and splattering while spraying depending on the ambient air temp or prolonged spraying sessions. This moisture trap solved all my troubles right away, even allowing me to spray in the middle of winter during very cold temperatures.

The build quality is a little cheap and plastic, and the rubber O ring inside sometimes needs pushing back into position to prevent from falling out after detaching from the airbrush, but overall an inexpensive, but highly effective water trap that I simply cant do without now.

My airbrush has a moisture trap before the line but some moisture still got through especially when used for a long time. This has been awesome to double the time I can use the airbrush without spluttering. Small size which doesnt get in the way when painting and doesnt stop the brush fitting in the holder

I have been using it for quite a while now and I haven't seen it collect moisture yet. Maybe there is not much moisture this season (summer). But it gives you the confidence, assurance and security against possibilities of getting moisture in your system. Why take the risk-