Suitable Air Compressor for air/spray gun.

EC

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I am looking for a suitable compressor which will be mainly used for applying duracoat with an spray gun. My knowledge of compressors and such is very limited so I am looking for some advice. I have a mini paint spray gun, it indicates that it has a 0.5mm diameter nozzle, 1-1/2" spray pattern, operating pressure 43.5 to 50.8 psi, air consumption 2.4 cfm@45 psi. Can anyone recommend a suitable compressor for this particular spray gun. Thanks.
 
What is important is the pressure (psi) and volume required (cfm = cubic feet per minute)
You need 1/2 to 3/4 HP with a pressure regulator. I would also recommend a water trap to capture condensation.

If noise is an issue, there are some units that use refrigeration type compressors. Worth the extra.
 
You don't have to go that big unless you are
running large volume indus. guns or a bead blaster.
you can get by with a 1-2hp. twin cyl. you need about
5-10 c.f.t./min , guns run under 50lbs. pressure, so that is not a
problem - A turbine to paint:eek: Where did you get that idea.
I have painted trucks and barns with a sears 2hp portable.
You want a large tank 10-20 gallons min.
 
For strictly gun work, a HVLP set up would be just fine. The amount of spraying is limited and the spray coverage small - compared to a car.

These all in one units are getting very inexpensive ie Princess auto. Not the best but then the finish quality doesn't have to be that perfect either.

Another option are the small compressors used for model airplane airbrushes. They will provide a 1" pattern which is just enough for an action/barrel. The whole set up is around $200. About the same pattern as a spray can.

There is little point in a 4" wide spray pattern for a 1" barrel. That is alot of wasted paint.

Spray cans work but get expensive.

Jerry
 
I believe air compressors are all rated by c.f.m. @ a given pressure (usually 90 pounds) - the info will be found somewhere...

Air consumption of 2.4 cfm@45 psi is not a high requirement I think any 1 horse would handle it. A good water trap and regulator is required for spraying finishes.

Just my thoughts... I think. :D
 
I use a small portable compressor, one of the ones that you can carry around. Similar to a "pancake" model, about 4cms and $200. I run a small high pressure "touch up" gun and other small spray guns with it. For spraying larger items, I hook up a large air tank to it for additional capacity. (I use an old 100lb propane tank with an air only fitting on it)

This setup is not HVLP but then I can also use airtools with it.

ADDED NOTE: You will find that oil lubricated compressors are generally much quieter than oil less compressors.

See Princess Auto, on sale next week $118, 5 cfm @40 psi, 3.8 cfm@90psi oil lubricated.
 
Last edited:
I edited my reply but it went into the black hole with
my 3rd quarter books I guess.
I had the missed the hvlp part, my mistake.
anoyher option is those portable airless- Wagner ,thou
they never worked for me the way a large rig did, But then
I am running a 5hp dual stage comm. compressor for a sand blaster.
 
You do not need a $1000 compressor (not even close). A small spray gun like what you're using requires very little air.
You will have no problem using a small compressor; 2-5 gallon tank is plenty big for that application. Compressors are usually rated with peak or constant horsepower. For your application a 2-3 hp peak will be more than good enough (that'll be about 1 hp constant).
In general, a $200 compressor will be more than good enough for that small gun.
I suggest you do some further research though. Some are better than others and there are a few other variables (oiled/oiless) which you may be interested in.
dh
 
I use one of the 5hp Colemans that Wally World sells for spraying gun kote. It's more then enough compressor, oil free and portable. Around $350.
 
Hunt around on your local Craigslist, or Bargain Finder/Penny Minder paper for a 1/2 HP, belt drive compressor. Or whatever you can find in your price range.

Without impact tools, or a car to paint or sand, you really (REALLY!) don't need much of a compressor to blow the amount of paint you will need to shoot to cover a gun at a time. If you end up needing a prolonged usage, such as sanding down a car with air tools, you can rent a suitable compressor. If you are painting more than one color, you will spend more time mixing paint, and changing it out, than spraying.

Check out the ratings. 2cu/ft@45 is pretty much equal to 1@90 psi. Belt drive compressors are quieter, as are slower RPM ones.

Turbine HVLP units are a choice to make when you want to make a living painting with it. Don't worry about them for light duty home use stuff.

I have one of the Princess Auto sorta HVLP top feeder touch up paint guns, and it's a pretty decent rig for $25. Get a pressure regulator for it, you can live without a gauge. Set your pressures on a test panel, just some brown paper or newsprint. You want enough pressure to get a nice spray pattern, without a lot of spatter. Unless you want spatter, anyways.

If you find a direct drive compressor, get some extra hose. Put the comp outside, or whatever you have to do to get a little distance, when using it, and you don't have to listen to it. The direct drive ones can be noisy. If domestic harmony is at stake, lock yourself in the room with it, and wear ear plugs.

Get a decent filter respirator, and some organic vapor cartridges! Breathing that #### is NOT the way to along happy life! Make sure it fits!

Cheers
Trev
 
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