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I have a graco hvlp 3800 paint sprayer, it has been cleaned but the paint just spits out. What can I do to solve this problem? Would thinning the paint help?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 98 Answers

SOURCE: need to repack pump on graco gm5000 gas paint sprayer

http://www.graco.com/
you can put your model in or if you have a part # you can enter it into one of the fields eventually you will fing a parts diagram for your unit.

Posted on Feb 21, 2010

  • 4088 Answers

SOURCE: why does my gun keep spitting

Spitting is usually caused by not filtering the paint through a strainer (made for the purpose by the paint manufacturer). The paint debris blocks the paint for just a moment, then spits it out. Easy fix!

Posted on Jun 21, 2010

muntejaya
  • 10421 Answers

SOURCE: how much should I thin my paint for use in an

Hi,
5 % will do.
Regards

Posted on Feb 21, 2011

Testimonial: "Thanks a lot. I went with 10% and it seemed fine. I'll try 5% on my next project."

  • 15 Answers

SOURCE: spraying kitchen cabinet doors 40 degree weather

first problem is the waterbase paints ( ****) the other is how did you mix your paint , you cam trap air in the paint if you padle or stired it without a shaker mixer air will gas out of the paint, tofix this use a foam brush to flaten air bubbles

Posted on Feb 25, 2011

SOURCE: HAVE A GRACO ULTIMATE MAXII

www.graco.com/Distributors/DLibrary.nsf/Locate?OpenForm.
may help?
www.graco.com/Internet/SiteSearch.nsf/Search?...L.

www.bidonequipment.info/.../GRACO%20INC.%20Electric%20Sprayers%20(Nova,%20Ultimate).pdf

www.sherwin-williams.com/pdf/products/electricsprayers.pdf
these links above are for manuals enjoy

Posted on Apr 04, 2011

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1 Answer

Can i thin Valpar Bond Primer no 46620 to apply with a Wagner sprayer?


If you have an airless sprayer yes , you can thin with a small amount of water or use flotrol for latex available at home depot or other box stores. If you have hvlp system no you can't. The hvlp uses a turbine wheel to compress air to around 3-5 psi. You did not say model Wagner sprayer you have. I use my Wagner to 1800-2000 psi. If the job is small you will have to consider the clean u time usually abound 30-45 minutes. Good luck

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Hello I just saw this in my inbox, let me see if I can help you-
NOTE: Whenever you are going to spray with any HVLP or cup-gun
strain paint through either a strainer bag or an Automotive strainer cone to remove any kind of debris from the paint that can clog the delivery tube that sucks the paint up from the "cup" and into the fluid needle.
yes even though "Wagner" says the Flexio will spray un-thinned Latex-
However by thinning your paint 10% to 15% you will get better coverage and the paint will move through the gun better
If you have no paint coming out try adjusting the fluid material knob on top-

Also try holding a piece of card in front of the the Tip and try all your Adjustments and you should start seeing the paint spraying onto the piece of cardboard or wall.

Thanks,

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2 Answers

How much should I thin paint for pneumatc sprayer?


you did not mention what paint, you did not mention what sprayer.

remember, if you use solvent - opacity of the paint is sacrified, tints are less visible, metallic require more clear coverage.

for water based paints - except airbrush, usually no thinning is required, but you need to first stir it well (at least 3min on manual or 1min 30sec if mechanical stirer is used) strain it, i am using old stockings for that purpose in single layer, works very well for me and if nozzle is above 1.4mm up to 2.8mm there is no problem whatsoever. if this is splatter paint (nozzle 4.5mm or greater) do not even think about thinning it...

for acrylic - if nozzle is between 0.8mm and 2.8mm, procedure as above and you need to add specific thinner, usually up to 20% albeit in some cases up to 40% per volume) so paint will be about like ight cooking oil - water.

for oil paints and enamels - solvent should be not more than 20%, albeit you can increase it up to 40% in rare circumstances, if you are using hvlp gun, you can, if you yousing hp gun - no! it will disperse too much.

for two packs and urethanes - not more than 20% better keep between 5% and 10%

for latex - in rare circumstances you are allowed to use very, VERY specific solvent, and ususally not more than 10%, nozzle usually is 8mm or greater in these paints.

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1 Answer

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You basically have what is called a "cupgun" and there are a few reasons for this and it should be pretty simple to fix I want to stress that anytime you spray the paint no matter what latex-oil needs to be thinned with the compatible solvent water for latex paint thinner for oil/Alkyd by about 10% - 18% that could be the problem if you have latex in your gun but probably it has to do with the "needle seat" in the back of the gun there should be a knob to adjust the needle turn your gun on pull the trigger and turn knob till paint comes out if that wont work you may have debris in your paint that has clogged the stem pour all the paint out clean gun completely pour paint threw a strainer cone or strainer bag and be sure to thin it...

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most paint spray guns require the paint to be thinned this may be the cause of the spitting

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Seeing how you have really stated what the problem is (spitting, clogged, won't shut off, fan pattern wont adjust Etc) and there could be several different things wrong- lets go over some basic spraying A B C'S- always strain the paint through a strainer bag or cone this will remove any debri that might clog the tip, *THINNING when you spray or atomize paint it should always be thinned it will actually cover much better if you thin it with the appropriate solvent water for latex thinner for oil base you want to stay in the 15% range alittle bit more on hot days. The shape of the spray that comes out of the tip is called "fan pattern" or "tip fan" "fan size" you can adjust the fan pattern from 9:00 - 3::00 or sideways to straight up and down or to a small circle this is done by moving the "tip housing retainer" keep a piece of cardboard to practice and see. IMPORTANT:When you have finished spraying you need to clean the entire gun by running the right solvent through the gun untill nothing but clean solvent is coming out dissemble the gun remove and clean needle and needle housing this is not very complicated and is paramount to maintaining any spray equipment for sure the gun....

Perry Tradesman

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The Wagner Capspray 9000 HVLP is about 20 years old, but you should be able to find parts, at least for the HVLP gun. The manual for the turbine is #0276989. If you are in the US try Scott at American Airless Wagner Titan Graco Paint Sprayers or in Europe try us at:
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