Thought I might share what I’ve learned about Harbor Freight HVLP guns over the last 24 hours in case anyone else decides to go this route.
First, comparing the green and purple guns; here is what you get in each one:
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The purple gun is $15 regular price, green gun is $25 regular price. There are differences, the purple gun has a plastic air director piece and a soft brass collar whereas the green gun has the nozzle screwed directly to the chassis (I assume the air channels are formed into the chassis itself). Also (and this is KEY), the green gun comes with the wrench that is required to remove the nozzle for either gun. The nozzle has a 19 mm slot that is narrow and too thin for a standard wrench. Why Harbor Freight doesn’t include that tool in every one is beyond me.
So, I originally bought a purple one but got a green one as well once I realized the wrench was not included. You can buy a spray gun wrench on Amazon for $25 or so but that’s the same cost as the green gun with the wrench. No brainer. The purple gun with the regulator ($25) also comes with the wrench, just not the cheapest one.
The green gun comes apart easier than the purple one. Main issue with the purple gun is that whatever assembly material they used at the factory REALLY makes it hard to get the nozzle off the first time. In fact the brass collar will unscrew before the nozzle does. The only way that I found to remove the nozzle from that brass collar without galling the collar is to use a 3/8” hex key into the back of the collar and the wrench tool on the nozzle. Then it came off.image (resized).jpg
Lastly, make sure you disassemble the gun and clean it thoroughly with warm, soapy water first. There is all kinds of gunk inside the parts from the factory.2BD810EE-4A4B-49D1-80C6-E4EECF007B3A (resized).jpeg
After all that you should be good to go. My plan is to use the purple gun for color and the green one for clear.