Question about Ingersoll Rand Hvlp Automotive Spray Gun

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IR 210g - using thicker paint

I am having a hard time getting a good coat on. I am using a water base latex paint. When i first tried sparying right out of the can, it would hardly spray. As I thinned the paint to the max recommended by paint manufacture, it did a little better but still very thin.

I am spraying at 45psi, air valve open 100% and needle all the way out.

am i doing something wrong?

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We do have here cardinal problem... this gun is totally and utterly unsuitable for latex paints! it's nozzle size is 1.4mm, for latex you need at least 1.8mm and preferably 2.4mm, if undiluted even more... any trickery with air flow valve, paint flow (needle) valve or spray pattern will not work, latex particles are long, stringy and clingy - you do need bigger nozzle and that is all...

by the way - it is lovely gun, nice to hold and work with, but it is usable for fine particle paints only, regardless water or solvent based, it is fine gun, but haevy paints based on latex or bitumen will physically just not go through it correctly...

hope this will help you at least a bit, please post your comment how it work for you.

Posted on Oct 20, 2013

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Thinning the paint is always best,but some gun manufacturers dont put on an air cap recommended for latex paint try using an air cap with biggers holes this will allow the paint to flow through better.It could be that the air cap you use now has to small of holes for the paint to flow through.

Posted on Dec 18, 2008

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I dont have so much as a solution as a couple of things you can try to figure out whats going wrong.

make sure your compressor can handle 10.5 CFM @ 50psi
hook up the gun and dry spray it to check for blockages in the air supply
if the air comes through strong and constant, fill the paint hopper with water and spray until empty
if the water comes through constant, add half of the hopper with paint thinned with penetrol or floetrol
if the paint is coming out weak or spotty, make sure the vent cap is open on the paint hopper
if the cap on the hopper doesnt have a vent, try spraying with the cap off or cracked a bit.
if that doesnt work take off the hopper and check the filter for blockages.

i suggest straining all your paint before pouring it into the hopper

Posted on Nov 22, 2008

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What size TIP you are using.
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Old tips wallow out and the spray pattern is irregular/uneven and the gun blows out too much paint and our material costs go up.

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http://www.airless.com.au/Airless%20Sprayer.pdf
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Latex semi-gloss interior: 1-1/8 to 4 paint and apply very thin coats and let dry between coats.
Cheap exterior flat latex: 1+ to 4 paint, and add more or less water as needed
Good exterior latex paint: use a roller and brush because the purpose of latex exterior pain is to apply heavy protective coat over outdoor materials ... dilluted exterior latex will not give sun and mildew protection.
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If can was opened yesterday, we strain it.
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First you need to mix your material, so you need a couple buckets.
Pour the paint and thinning material in 1 bucket, and then to mix, pour back and forth between two or three buckets. This action will mix the paint thoroughly and save you an hour of rotating a paint stir stick.
Next, you need to strain the paint.
Wash out a 5-gallon bucket.
Buy 5 gallon strainer that fits into bucket.
Pour material into bucket with strainer, lift strainer up and then grab end of strainer and squeeze out all the paint.
Immediately put lid over paint so no drying film will form.
Wash out strainer.
You're ready to put paint in spray gun.

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