How to setup the correct working pressure on a spray gun for best performance
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- Опубликовано: 29 июн 2024
- In this instalment of GT Air Projects we show you how to correctly setup your spray gun for optimum performance, efficiency and atomisation. The extremely popular Burisch GTR500 LVLP Gravity Feed spray gun is used for this demonstration, in conjunction with the Fast Mover FMT3040 mini spray gun regulator. We’ll explain what all the adjustments do on the gun as well as explain the difference between static and working pressure and how to set it up correctly, accurately, every time.
Products used in this video:
BURISCH GTR500 LVLP Gravity Feed Spray Gun
gtair.co.uk/spray-guns/259-bu...
FAST MOVER FMT3040 Mini spray gun regulator with gauge
gtair.co.uk/accessories/49-ai...
BURISCH BT350V 10bar 3HP 50L Air Compressor
gtair.co.uk/air-compressors/3...
Mini Spray Gun Water Trap Filter
gtair.co.uk/module/iqitsearch...
Silverline Filter Regulator with Water Trap
gtair.co.uk/air-treatment/28-...
Visit www.gtair.co.uk for our full range of air compressors, spray guns, filters, regulators and related accessories. 
Хобби
I have bought 4 different regulators, convinced they were all defective, then I found this video and realized it was operator error. Thank you, as sad as it sounds, you've made my day 😄😁😃
Great tutorial. This is one of very few that explains the difference between static and working/dynamic pressure at the inlet.
Watch over 30 videos about this subject. This one is the best. Thank you for sharing.
This is by far the most informative video on how to adjust the working pressure. Being a newbie, I didn't stumble this video until I have failed 4x to get my gun to work properly.
Thanks, as a very occasional Spray Painter this really helped me with my set up on this model gun.
Thank you Ewan Mcgregor :)
Needed that refresher, thank you.
I am so very glad I found this tutorial-this guy knows exactly how to dial in a spray gun. My first time out with a cheap LVLP-
AEROPRO Tools R500 LVLP Air Spray gun and I got through a gallon of Sherwin Williams Pro Industrial Pro-Cryl Universal Primer on an iron fence just in time to beat the rain that came overnight. No words can express my appreciation-I would have had to scrape rust a forth time, as it has rained every single time I have gotten the fence ready to prime. Thank you so much.
Thank you for the detailed explanation! I had no idea how to use my new air gage at the gun so this video is very helpful!
Hugely helpful to someone who's never used a spray gun. Thank you!
Great video, explained simply and informatively!
Excellent tutorial-well done! Thank you so much.
Awesome thanks, that's exactly what I needed to know 👍
Just the video I needed!!!
I found this video. Very informative. Thank you.
Very well explained, nice job.
Very clear and straight to the point video. Thanks for the helpful instructions. !!
thank you my dear you really helped me in taking valuable information for my study
Very well explained, thank you 👍
Excellent video. The last few days I've been searching for a video that would explain exactly this. You detailed the steps in a way that was hugely helpful. Thank you
Excellent video. It's very informative. Many thanks for sharing.
Excellent! Thank you.
Very well explained 😊
very helpful, thank you
Many thanks!
It is important to note that this is just general recommendations. The actual air pressure you need may vary depending on the specific spray gun you are using, the type of paint, and the desired finish. It is always best to experiment with different air pressures to find the one that gives you the best results. In this case he is using the GTR500 which requires 29 working air pressure while the KBS Spray Gun is much different. The working air pressure for the KBS air spray is typically between 15 and 50 psi. The specific air pressure you need will depend on the type of paint you are using and the desired finish. For example, you will need a lower air pressure for a thicker paint like enamel, while you can use a higher air pressure for a thinner paint like latex.
This is the proper way to adjust a spray gun. Far too many users run the compressor output regulator too high and dial at the gun without realizing the problems it causes
I set the pressure at the compressor anything less than full and there isn't enough flow, the air empties out of the air line before the regulator can let air in to keep it full
Very helpful video
Question. I have just started running line for hvlp gun. What do you do with the pressure regulator at the compressor? I have 30ft of 3/8 line from compressor to a water separator and larger regulator, then a 50ft line on a reel the to the gun. From your example, set intermediate regulator to zero and gun full open, and increase to working pressure. What about pressure at tank? Full open? What will yield longest run time without interruption? It’s only a 27gal tank, 200psi, 6.8scfm@40psi, 5.1@90, 1.7rhp. My gun says average consumption is 4.3cfm, and operating pressure is 40psi... not sure what to do with this info.
not trying to paint a whole car, just parts. First time.
Someone said two 50ft lines was to long, so I cut one to 30.
Secondary question....I noticed your first line goes straight into the regulator, not having a quick disconnect coupler. By design? I was gonna and one on either side of intermediate regulator ( on lines). But not sure
I’m still trying to find your link on how to fully clean the gun after using. In the manual it says go to your website, but cannot find.
A video on thinning acrylic paint and setting up for spraying would be useful
Thanks
Very good explanation for us beginners. But how much hose between compressor and wall mounted regulator is required ?
It's a very confusing topic, but you can get away with a pretty long hose for painting, since you saw, the amount of overall pressure is much lower than say an air impact gun. As you decrease pressure, CFM rises so, a reasonable length hose will still deliver enough flow and pressure. Just keep in mind for long runs, it would be best to use a larger hose (3/8"). That said, setup will be the same as in the video
So often the paint directions list air pressure to be set… so which to follow? Paint gun or paint? Thanks
What happened to the bigger belt drive compressor you did. It seems the biggest is now 90L. Why is this ?
So when it says max pressure on the side of your gun is that max inlet static pressure or working pressure? Because mine says max 43 psi but when working pressure is 29psi it jumps to 70-80 when static..
Hello, is this gun for Base coat or clear coat , how efficient is this gun?
Excellent video. What’s the knob on the bottom of the handle for? People say to leave it fully open or closed I don’t remember but what’s it for and proper setting?
Normally if there is a knob at the bottom of a spray gun its a pressure regulator, if you have an auxiliary regulator with gauge fitted then you want the knob on the gun to be fully open, if you don't have an auxiliary regulator fitted to the gun then you will need to adjust the knob on the gun to get the correct pressure (which is difficult without a gauge at the gun). Hope this helps.
@@RyanBurisch yes, thanks Ryan good to know.
you say a working pressure of 2bar but keep setting it to 1.5bar?
what size is the male that comes from the handle? i have a 1/4 bsp quick connector on my air hose...what connecter do i need? any help appreciated thanks and a great video
1/4" BSP
Thanks so much
@@gtairprojects5298 you know what size air line if 1:4 bsp paint gun. I see different air diameter like 10mm. 8mm
@@garydeandeery Hi - either will do, they both accommodate enough CFM for the gun - 8mm would be a lighter hose which would be easier to handle.
Ewan Mcgregor?
So if im getting lots of overspray do i want to keep the fan full open and reduce pressure? Or keep pressure and reduce fan?
Reduce fluid
What is that red thing just before the spraygun pressure regulator?
filter
What is that red round-ish ball thing connected to the regulator?
Pre gun water/contaminants filter. You will still get water even with the wall mounted water trap
Hi do you need high flow air fittings for lvlp spray gun
I would say so. If you’re running a smaller compressor you’ll need its max CFM and high flow fittings help, along with a 10mm I.D. hose.
In the same why make a bigger spray gun that will blow water up to ten meters which is used to spray apple orchard
How is the optimum working pressure calculated ?
Your eyeballs I'm afraid
The only way i can increase working pressure is if i move the 12 oclock position to around 2 oclock position. Idk what im doing wrong. Wall reg set to 60psi ( doesnt matter if i set it too 100psi nothing changes) ive tried with two diff gun regs and when left at 12 oclock position the working pressure is around 10psi....any help?
Sometimes the clocking on the pressure valve of the spray gun is not exactly at 12 o clock, turn it back and forth until you get the highest pressure reading and the valve will then be fully open.
@@RyanBurisch its definitely the 12 oclock position. Its something to do with my hose length. If i use 5m of hose then i can set the gun up to perfect psi using the reg on the gun. But if i use total length of 13m of hose, thats when the problem occurs
@@RyanBurisch but thank you for the reply and trying to help man. Greatly appreciated 👍
@@ballstank3904 Could be the internal diameter of the hose. You really want 10mm Internal diameter, and fitted with High Flow (PCL XF) fittings.
@@RyanBurisch totally agree with you. So just got back from the shops. Bought 10m 3/8 hose. Bought some fitting to go in the inspection plug on the side of the tank. Bought an in-line filter. Connected it all together. Works like a charm. Finally got it working how it should. By doing it this way i eliminated the wall pressure reg and 2 extra connectors. Plus the shitty 1/4 hose
Is it 29psi or 22psi like the manual say’s ??????????
The manual says 22psi at the air cap, so you need more pressure at the regulator. Manufacturers talk about pressure at the air cap. It's weird, but does not matter anyway because there's no way of knowing how thick or thin matertial you're spraying, so they can't give you a definite answer.
Ok
Can too much pressure create little bubbles on the surface of the item?
No, what you're most likely getting is water from your line. The way to help remove it is with a filter.
They're called desiccant filters. They look like the little balls in bible tea. This will help but won't guarantee you water if there's a lot of water in your line.
Make sure your compressor is drained with the drain valve at the bottom of the compressor. The the best way is to get a wall mounted contaminant filter. Home Depot and Lowe's sell some for a reasonable price but some of the professional ones can get up into the hundreds of dollars.
If you're just doing small jobs where quality isn't crucial, you can let the paint flash off in between coats so you can touch it with your finger and you could brush the water drops off. You still might see it if you look closely after you're finished but it'll be better than if it goes unnoticed.
www.homedepot.com/p/Husky-1-4-in-NPT-Inline-Desiccant-Dryer-HDA72300/305303724
Solvent entrapment
@@cspray5386 due to what?
@@dimebag108
Too much paint
Not enough time between coats to allow the solvents to escape.
Follow TDS on paints - majority are available online or ask a representative.
Example - first coat goes on , wait how long before second coat , - every product is different - then you have ambient temperature and surface temperature.
But usual check is spray a side section or check the tape beside with paint on it. - if it leaves a fingerprint but doesn't stick to finger , then usually it is good to go.
Then you have different thinners as well to help you play with the conditions.
If you wait too long , it can be like putting a first coat ( tack coat ) on again.
Go too soon - the thinners haven't had time to evaporate - hence - solvent entrapment.
If it's too hot, and the outer skin dries before the solvents escape - solvent entrapment
@@dimebag108
And assuming you do have tiny bubbles on the surface, solvent entrapment, but understand,I haven't seen your project.
You have 2 options at this stage - try to sand through the bubble issues, followed with a rub and buff - good luck
Or , sand it , re prime it and spray topcoat again.
This time follow instructions on TDS
I detect the sound of a south african accent....
The guy says the gun needs a working pressure of 2 bar, or 29 psi as he points to the manual, but you can quite clearly see the manual say 1.5 bar, 22 psi. Clearly both figures can’t be right, so which is it? Maybe, you might want to redo the video again, but first read your own manual!
The manual says 22psi at the air cap, so you need more pressure at the regulator. Manufacturers talk about pressure at the air cap. It's weird, but does not matter anyway because there's no way of knowing how thick or thin matertial you're spraying, so they can't give you a definite answer.
@@SUMOCAT86Thanks for this, a key snippet of detail nobody mentions 👍