HVLP Sprayers

Steve explains the benefits of HVLP sprayers for big finishing jobs.

Category:

Howto & Style

Tags:

• HVLP
• sprayers
• finishing
• steve
• maxwell

[smaxwell1963]

Armchair critics feed off their own rants while the rest of the world take risks, wrestles with reality and makes good things happen. Heaven help the ranters.

[freshtalent26]

"Compressors only deliver cold damp air"??? Buddy please don't lie to people just to prove some sort of point. Unless you're an idiot you always have a moisture filter for your compressor. As far as warm vs cold?? How is this true???

[smaxwell1963]

Hi freshtalent26!

I have five compressors in my shop, and even though the largest is connected to a moisture filter, some moisture still comes through in humid weather – enough to cause problems with some finishes. The reason is physics. When any compressed gas expands (as air does when coming out of a spray gun) its temperature drops – quite a lot, in fact. When I drain the air from my portable compressor, for instance, the drain valve actually forms frost, even on the hottest day.

[billynightmare]

kinda proves its total shite @ 2:41

[WolfDog375]

Hmm, the idea of a HVLP reminds me kinda of old soviet vacuum cleaners, which had another hole for the hose in which the air comes out and specially made for that sprayers, only they didn't have a button to start spraying so you had to turn on the vacuum cleaner to start spraying. Used to spray trees from insects and make small paint jobs, never tried it though

[wesleytarbuck]

@chirpieguy spraying for any decent length of time with one of these things, leaves a tiny fine dust everywhere. Everything and i mean everything still has to be covered. I can get less overspray with an airless unit when operated correctly.

[wesleytarbuck]

i'm a house painter, and i wouldnt dream of using one of those things inside a home, or even outside for that matter. Talk about high maintenance. Air assisted airless, or straight airless. No fiddling with the machine. HVLP units are very touchy. They look wonderful at the product demonstrations, perfect for a workshop, NOT for a home.

[chirpieguy]

@OMGitsRYANhere

Geez dude, it was WATER on PAPER. The point of the exercise was purely to show the lack of over spray. Good grief.

[ManOfGreatHeight]

Smaxwell1963, I appreciated your video. I'm just starting to evaluate HVLP sprayers for cabinetry/finish work, and your demonstration also showed some other useful capabilities. Regarding moisture: Rapid compression of air results in heat as the cylinder expands. Rapid decompression, as you pointed out when you use the bleeder valve, will result in cooling -- even though the air (in both cases) is identical. Clearly, greater relevant humidity will result in more captured moisture.

[BestHVLPSprayGun]

What's with these negative comments?

[VertigonA380]

One things for sure, you don't know how to install a door. I can see the outside from the inside. I hope you did better on the toilet door, otherwise your nuts will be exhibited for all to see.

[thenrie]

Air gives off heat as it is compressed, but the heat is contained in a tank, so the compressed air in the tank is hotter than it was before compression. As it is released through the air hose it decompresses and cools, which releases moisture in your lines. With a compressor, always use a water trap as close to the gun as possible. A turbine box generates low pressure air and therefore is pretty close to ambient humidity and less likely to contain water droplets.

[SwPiotrek]

Thanks for interesting video!