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It wont hold pressure in the main pressure tank, i can get 2 sprays from the paint gun and then pressure has dropped very quickly.

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Is your tank filled with water

Posted on Dec 19, 2010

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Posted on Jan 02, 2017

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How do you take this hvlp gun apart for proper cleaning of the spray gun?


I've found over the years the least amount of times you can tear a spray gun completely apart the better. Usually a real good 'flushing' with lacquer thinner will suffice. I will take the air cap off and let it soak in thinner to dislodge any build up but other than that, I simply run thinner thru till it runs clear out the tip.

I also 'back flush' which involves having thinner in the cup and the air supply hose attached. the air pressure should be adjusted quite a bit lower than what you use for spraying paint.

Then you place a clean shop towel or rag over the air cap of the gun and pull the trigger. This forces air back into the paint cup 'back flushing' the gun. Then take the rag away from the cap and pull the trigger again to run thinner thru the gun the normal way.

IF you still want to tear the gun apart for cleaning you can hopefully get some idea with this video link;

Quick Easy Way to Clean HVLP Spray Gun

Hope this helps.

May 25, 2015 | HVLP Air Tools & Compressors

1 Answer

Spray is pulsing


this is usually caused by:

1. water in pressure tank of the compressor - clean the compressor holding tank
2. faulty valve in direct drive compressor (rare!)
3. dirty needle/gasket in the piece.
4. insufficient air flow

regarding 1:
stop the compressor,
open drain on separator and let all liquid out
allow pressure to drop to atmospheric
open drain valve on the tank and drain the content
on the compressor body find oil drain and drain oil
fill with new oil according to instruction on your compressor
close drain valve on the tank and separator
start compressor and check if problem is solved

re 2:
return valve is too difficult to change without specific model knowledge

re 3:
fill 1/3 (pint/500ml or less container)gun container with paint stripper and spray it directly to the sink or other container on full blast - WEAR SAFETY MASK, GOGGLES AND GLOVES! STRIPPER WILL BURN YOUR SKIN!
fill same level with water or solvent and run again, this operation should remove most of residual paints in nozzles and pipes.
check now nozzle for cleanliness and needle assembly, clean what necessary, use bit of vaseline when you will put it back together.
check for consistency of spray on piece of butcher paper with your usual paint. if problem solved - you are fine!

re4;
increase air flow... this actually should be done first.

for better instruction - please provide with model of the gun and paint used.

your comment and rating will be appreciated.

Oct 15, 2013 | Air Tools & Compressors

1 Answer

Spray painting


It depends on what kind of spray gun you have. If you have a HVLP gun the pressure doesn't have to be as high, but you need a compressor that will keep up. The pressure is usually pretty low on these guns, about 15 PSI or less. The paint manufacture will usually give you a recommended pressure to paint their paint. A normal (old style) suction type gun takes more pressure, about 50 PSI. If you are asking this to decide on a compressor size, you will find that a one horse motor on a two cylinder compressor will not keep up. The newer supposedly five horsepower compressor will not keep up consistant pressure either. You need a five horsepower that runs on 220 and driving a belt driven two cylinder compressor minimum. You can get by on less, but have to wait half way during a coat on a car to wait on the compressor to catch up. This may be o.k. if you are just going to paint one car, but if you are looking to do this consistantly, then I would get a five horsepower motor on a two stage compressor. Make sure you drain the air tank of water and use a good air filter to remove moisture from the air before trying to paint. Hope some of this helps you.

Feb 16, 2012 | Bernina Sewing Machines

2 Answers

I HAVE CLEANED MY DH3800 SPRAY GUN AND THE PAINT WILL HARDLEY COMES OUT I AM USING 60 PSI ON A LARGE COMPRESSOR WHAT AM I DOING WRONG AND THIS ONLY THE SECOND TIME THAT I HAVE USED IT ( AND THAT IS...


These guns are made to use about 35 - 45 lbs psi and the paint needs to be thinned a bit. You will have to experiment with the thinning for how much coverage, how much humidity, what type of paint and thinner it takes.

Sep 25, 2011 | Campbell Hausfeld Air Comp Basic Spray Gun...

1 Answer

Not sure how much paint thinner needs to be added to paint with a spray gun


That depends on what type of paint you are using, surface to be painted, and air pressure for the gun.
Some type of paint needs different air pressure.
This is something you will learn by practicing. Try mixing a little of paint with some thinner
and spray using different distances from the surface to be painted.
If paint is not getting well distributed on the surface then try adding some more thinner.

Aug 05, 2011 | Air Tools & Compressors

1 Answer

Hey yall i got a sharpe finex3000 hvlp spray gun model sh-880 1.4 finish gun. and ive used this gun before and i cant remember how 2 set it up etc or what the best working pressure is. anyways i was tryen...


There is a step by step description in the manual of the Finex3000 itself (incl. pressure set-up, etc...). In case you don't have it anymore, you can look online: http://sprayfinishingstore.com/manuals/

Jul 25, 2011 | RTO Sharpe Finex 3000 Hvlp Gravity Auto...

1 Answer

My binks 18 spray gun squarts paint from the hole in the part that holds the cup on when i release the trigger


spray gun is cloged (clean it!) also check gaskets in gun and vent hole in cup lid ( could be cloged)

Jan 11, 2011 | Binks MACH 1 HVLP Pressure Feed Spray...

2 Answers

I have a model FP209501 Air Compressor 2 Gallon,


2 gallons is small to begin with u need to buy an in line pressure adjuster/regulator their a few bucks and can be attached to the paint gun or line and will keep the pressure at ur adjustment the regulator on the tank sets the tank pressure at 50 so when u us it will let it drop down to about 45 than start up to build the pressure up to 50 than shuts off than repeats it self the inline keeps pressure steady even if tanks are at 200 psi

Jan 18, 2010 | Campbell Hausfeld 04 Gallon Twin Stack...

1 Answer

ORANGE PEEL


Orange peel can be a really hard problem to diagnose. There are a number of things that can affect the spray pattern. I would start by doing some test spraying. Your air pressure is going to be a factor as well as the ration knobs on the gun. I would start by increasing the air pressure to the gun. Keep in mind that if you're regulator is at the tank the actual pressure at the gun is going to change based on the length of hose used. Generally speaking, more air pressure will disperse the fluids better, better dispersal better/smoother coverage. I'd start there and then tune on the knobs to adjust it. Keep playing with it until you get a pattern you're happy with. Then when you're done with that write down how many turns on each knob, and exact pressure, length of hose etc. This way when you clean the gun you can get it exactly the way you want it. Different products will also spray differently. You may need to adjust for each step in the painting process. I just had to go through this on my new gun and it took about an hour and a pint of clear to get it spraying well. Check out tcpglobal.com for paint and supplies. They have great prices and they also have a forum on painting. I am a user of their products and forum.

Nov 17, 2009 | HVLP 2 DeVILBISS StartingLine...

1 Answer

Adjusting needle for optium spray pattern


There are a number of possible causes.
These are compounded by the different types of guns like HVLP and what would an older style. Also are you using a pressurized, gravity feed or siphon gun.
However, the reason for spatter is improper atomization of the air and paint. The most common causes are incorrect air flow or incorrect paint viscosity. If you don't have a way to check the viscosity get one. I painted in factory repair area that used a pressurized system. On any given day there might be 9 to 12 colors we used. Each one would have a different vis. Air adjustments could range from 50 psi. to 95 psi. This will hold true for almost any type of paint.

May 04, 2009 | Air Tools & Compressors

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