How to Set Air Pressure / Air Volume for a HVLP or RP Spray Gun with SATA
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- เผยแพร่เมื่อ 1 ต.ค. 2024
- Are you failing in the paint booth before you even pull the trigger? What are the air volume needs for a HVLP or RP spray gun?
The volume of air you send a gun could have more then anything to with material usage and application issues then any other issue in Collision Repair.
Learn from SATA DanAm Marketing Director Tony Larimer as he discusses everything from choosing the right fitting to selecting the right pressure at the wall.
Before you even pull the trigger, the right volume of air will make your refinish flawless and easy.
www.CollisionHub.com
Great tip to turn down the Air Pressure from the tank to the hose and open up the gun. Very logical. Thanks for sharing.
I know the owners of this video have moved on - but for those watching this for the first time - there's merit in what the SATA dude is saying. Not sure of the science behind it - but regulating the air at the beginning of the hose - rather than pinching it at the gun made a big difference for me. I opened the flow in the gun up until there was just a thread or two left - and opened the gun regulator open and then turned down the air at the dryer. The result was a softer and much fuller spray of clear that laid on like liquid candy. Around 40psi at the beginning of the hose resulted in 20 at the handle and probably 12 or so at the tip. Try it - it worked for me.
Dave Sinclair Yes, I think you are right. I mentioned this above to another person, but with my limited understanding of flow through a medium, turbulence is created at restrictions, and the HVLP gun is likely designed for turbulent flow ONLY at the nozzle. Any turbulance before that is added to the nozzle, which is undesired and not originally intended in the design.
Dave Sinclair What about leaving the gun side regulator wide open just so you can read pressure, while still regulating it at the tank?
Or is that still fairly restrictive?
Lou Kingman Your idea would work - think of the hose as the float bowl of a carburetor - in that it creates a reserve of pressurized air to be used as needed. Logic tells me there's no difference - but I just sprayed a 911 and I have never had a better flow of clear -- just like liquid candy.
well back in the old days, everyone painted with a siphon gun with maximum fan, and maximum material- needles backed all the way out to the stop- and regulated the pressure at the wall on the shop air. so this guy is not telling us anything we weren't doing since 1910 painting model T's with antique Spraco siphon guns with an .086" tip. he's basically telling us, treat the HVLP or RP gun like a conventional. and if you look around enough, you'll find out a lot of guys are pumping their HVLP gun pressures up to 60 psi- well that's not HVLP anymore, it's conventional masquerading as HVLP. true HVLP is a bleeder gun with constant air coming from the cap, and material bled into the airstream when trigger pulled. and the air supply is from a turbine, and paint from a pressure pot. that is true HVLP. we were all sold a bag of goods, i.e. a bag of bs- when they foisted these HVLP guns upon the industry. and the painting industry took the bait, hook line and sinker, and even swallowed the pole. they got everyone to throw away their trusty reliable Binks 7 guns they had since 1937, to buy new $500 HVLP guns that don't paint for crap.
What i do i have a regulator and filter on the wall i turn the regulator down to 80, then by the time its get through the hose to the gun its the exact pressure i need. to easy.
Best explanation of gun performance on TH-cam. Thank you.
damn that painter is one of the fastest ever seen ..lol
I just want to come here and say thank you. I was using an hvlp to refinish my handrails for a home diy project and noticed the coat was flatter in several spots that it should. Seems I had the pressure set 3-4 lbs higher than I should. I lowered it and used high flow fittings and the finish is night and day.
Appreciate the straight forward video. Cheers
This probably explains why I have to replace my air micrometer frequently.. having 125 psi line going into my gun :0
So I need 15cfm... That's not just an ordinary compressor is it... And judging by the video, the overspray is much more than I would have imagined with an HVLP... 50% of the paint seems to be getting away.
Great video. Tons of information! But why are you spraying your clear so strange at 5:38 through 7:00? It's like you are having a seizure. Why are you making such fast movements.
Do you always spray with the trigger fully pressed/wide open? Thank you.
I just brought a SATA digital it makes a back yarder look like a PRO
I see. I bought one yesterday, sata rp 5000 1,2. First time using sata and clear came out so chunky I was in shock and upset. It felt like I’m using a 1,8 nozzle. But now I can see the problem was the air gage being down close
Great info, best change I did was adjust spray booth pressure but I actually leave a bit higher, it just works for me. And I switched to the high flow fittings. Big difference, thanks
How is setting pressure at the wall able to be done with a fresh air mask such as the vision 5000? It seems like the pressure to the mask would be way to low.
I was thinking the same
all that to save a little overspray and some paint, and meet emissions standards....oh well, they're trying...but what a crock thinking that actually matters. what I see is a stressed out painter who has a gravity cup in his line of sight, can't paint as good or see as good as an old siphon cup underneath the gun. and has to make a lot more passes to get the panels covered. if you watch the video they are painting like a madman frantically trying to cover the panel. with an old Binks 7 or Devilbiss MBC they'd make a few passes back/forth with 50% overlap and be done. I just don't get it- why this HVLP and RP is forced upon everyone. makes no sense.
I know exactly what you mean...and I would say that if you have to paint as close as 5 or 6 inches to a panel, you rapidly increase the likelihood of metallic streaks if you are not exactly perpendicular because at that close range it's not very forgiving. I'm glad I no longer have to earn a living in auto body.
That was a good tip!
I was a painter back when SATA came out with their first HVLP guns. I think it was a jet95? Maybe Jet95 NR? Anyway, I had more gun distance from the panel and much slower passes that I see this guy doing. I also did a 50% overlap. This looked like an 80% overlap. Is this just a new way of painting or is it because of the RP guns? I still paint sometimes, so I'm curious. Am I now doing it wrong?
The guns now are much better than the NR95 you gotta be moving I run close to 80% overlap as well even basing metallics. The sata 5500 is a bad mofo gotta be moving and grooving with the base and clear you can choke the fluid down a bit on the clear gun and get a good finish either way
@@rickybyrd660 I just bought a digital 4000 RP 1.3. I didn't like the NR95. I continued to use my 1.4 Jet90 back then. I really like how my minijet 3000 hvlp and my new 4000 RP 13. spray.
@@CarbonGlassMan that’s a good gun I wasn’t a big fan of the 5000 but the newest model is hands down the best base gun I’ve used. It makes metallic laying and blending easy. I used the hvlp 1.4 on the 5500. If I had a good downdraft I’d be using the rp for clear. I’m using an lph400 with a 1.4 atm. Also the new Satas have a 0 and an I tip. I liked using the 0. If you like that mini jet then you’d probably really like the lph80 with a 1.2
@@rickybyrd660 I owned an lph400 Iwata before and loved it. That's one of the guns that got ruined. That was a really nice spraying gun. I have an older downdraft booth here with a bake cycle. I'm a mold maker now, making fiberglass and carbon fiber molds for the race industry so most of my painting now is just spraying clear coat on carbon fiber body panels. I do sometimes spray base coat too on my plugs that I plan to make the molds from but I just stick with black base to show any imperfections. I do miss painting cars. I was pretty good at melting clear in on C pillars.
This is a great video , while I have some trouble due to the speed of talking !!
So he do not use a typical HVLP gun there, but a conventional one regulated to spray with low pressure high flow ?
Is there an aided part around the nose for the last second of video ? an accessory ?
Thanks
I mostly spray lacquer on woods and some "primers" too
The SATA 4000 in his hands is a HVLP
i have devilbiiss flg 5 which is transtech not hvlp basically conventional but everything he says here makes any gun work better
Love the amount of detailed information that I would have to learn from messing up a hundred paint jobs to figure out. Thank you
Have a 30 gal compressor 5cf @40 and 4cfm@90 but HVLP gun says it operates at 15cfm I suspect I need a larger compressor, or add a tank. if so what should I shop for?
Definitely a larger tank will help a lot. Also be sure to use High Flow fittings, so you don’t have further pressure restrictions, and volume restrictions. If you add a 200 gallon tank, you should be able to get by. However, what I don’t know, is how large of parts and pieces, or are you painting full cars. If full cars, you will need a larger compressor. If doing this for a profession, at least 7 hp to 10 hp. If as a hobby, the 5 hp compressor will be enough, but be sure it has a large storage tank, perhaps at least 60-80 gallons of storage.
Great video!!!!!!!!
MOTIVATED PAINTERS I agree Gabe. I have been trying to convince the shop I work at to re do our air lines and hoses with high flow fittings and to put regulators on the wall. They think I'm crazy for wanting to don't this. I plan to show them this video in the morning I'm glad I found it. Lol
im new. I actuall painted a couple of vehicles. First one had tons of orange peel. I only had the pressure guage at the gun. I bought another water separator for the wall. I acyullay said, let me try setting the wall at 40 and the gun at 28. It came out with no orange peel. I just wanted to cheack and see if the pressure at the gun is supposed to be 28 while spraying, or with the trigger closed. And I came across this and the guy is saying works better set at the wall. I just tried it to see what would happen, and now I find it is the way you should do it. And I will sat, the primer, and the paint all cme out smooth as if I purchased a panel primerd and painted from a factory. I did have a few fisheyes I had to sand and redo the job with though. next time I will know to wipre the thing with grease and oil remover. And get fish eye remover for the paint. It screwed me up bad and wasted an entire day correcting it.
This is exactly the issues I’m having. Great tip can’t wait to try it
I was spraying with 125psi line pressure and reducing it to 30psi at the cheap gun regulator :O
I will try setting line pressure at like 60psi and hope there is little to adjust to get 30psi next spray
OK main regulator pressure, pressure setting at the gun regulator and the air adjustment on the gun. I have no idea where to start with my Devilbiss touch up gun after watching your video???? Just give me a starting point!
Great instruction, Cameraman is trash.
only have 5 cfm to work with. but i have 225 psi to work with. can i use the 3000k rp???
Your audience must be advanced
Thank you thank you thank you. You explain and describe perfectly and every word you say makes sense. Would love to have your knowledge.
By far the best video on this subject that I could find and thanks for sharing.
la traducción al español de los subtítulos es impresionante, no tiene comparación con nada que haya leído nunca antes , gracias por semejante esfuerzo
I know this is an older video, so making comments or asking questions here now is probably a waste of time... but here goes anyway!
First of all, he's incorrectly stating the air pressures for HVLP & RP; he's switched them: HVLP 10psi or lower and 15psi and higher for RP.
Second, it doesn't matter where the air pressure is set - whether it's at the wall or just prior to being sent to the gun - because the air speed will be the same regardless.
Nope...
Choking down at the gun changes performance.
It's been proven by every gun manufacturer and paint company
Thanks for your reply, @@Collisionhub. If you check the statement I made more carefully, you'll see that I was talking about the pressure being reduced prior to the gun and not at the gun itself. If the pressure is too high, then quite obviously it needs to be reduced, right? I'm contending that it doesn't matter where that's done prior to the gun.
it matters a lot where it is set im not being rude and hope you dont take it that way you should rewatch the video if you set at the wall and use the hi flo fittings you will get a better job everytime try your settings both ways his way will give you a better paint job
@@Collisionhub I didn't say to choke it at the gun. I said that I did the restricting prior to the air entering the gun, not at the gun itself, which I kept fully open. Notwithstanding, nearly 6 months ago I made a major change in my spray booth setup and mounted a high-quality air pressure gauge at the wall. I then removed all the mini air gauges from my spray guns. By having a shorter gun (by not having a regulator nor any filter hanging on the end of my handle) it improved my ability to get into and around the insides of cabinets - which is what I spray (I'm not into automotive work). Then, to give me a better idea of what pressure loss my 20', 3/8 ID hose and high flo quick disconnects were imposing, I installed a mini-gauge at the base of my favourite gun - Fuji Spray's LX-20 HVLP model - and went through several tests to see what the pressure difference would be. In all my tests, the pressure loss was 1 PSI. Wanting to see if that equated to the same pressure loss at the aircap, I swapped out the aircap on for one that had a mini-air gauge tapped into it. That additional step confirmed again that I was consistently losing 1 PSI.
@@les1ed thanks for your opinion. Please see the response I just gave to @Collision Hub regarding the upgraded spray booth, which now enables me to set the pressure at the wall.
How do I reduce the massive overspray that this gun is known for? 4000b rp.
Thanks!
:)
To achieve the air pressure correctly, we can adjust the air pressure control gauge and reading the number on it.
To achieve the width spread correctly, we can adjust the spreader adjustment valve and measure how width it is (by inch or cm).
To achieve the correct distance between gun and the surfave, we can measure it (by inch or cm).
But how to achieve the correct fluid flow or velocity?
What is the best indication / direction in adjusting the fluid control and how to know if the volume of the fluid's spray flow is right and properly? (whether is too much or too little?)
What about if you are using devilbliss dv1 ?? Is it still not a good idea to use its knob that controls psi
Türkçe altyazılı koyunda bizde izleyelim
sata"s are overpriced pieces of crap I just bought a digital rp 4000b the first time I took it apart to clean it the cheap plastic air flow distributor behind the nozzle was never the same
Thank you for the tip very usefull, i will apply that to my procedure
Needle valves serve a purpose but thanks for talking in detail abouts the misconceptions.
hi I have 2 sata 1 is 5000 b rp 1.2 and the 2 is 4000 rp .1.3 can one be converted to hvlp or can I use this gun for Basecoat
Despite this being a video aimed to drive sales for sata the info is top notch. Very highly recommended every painter watch (by me.)
Thank You!
Psi. We use bar my 3000rp is at 2 bar sprays standox clear coat great Like the tip ajust at wall then open air fully open at gun to get the balance
Hi sir thanks for informative video
Collision Hub What is the proper wall air pressure when two people/guns are spraying simultaneously?
That guy is build like a lady softball player
Hi! can you tell me how many liter/minute and bars are required for a 5000B RP with a 1.2 nozzle?
so is this for ALL Hvlp guns or just for Sata guns???
The man on the right who use the straw as a indicator when showing the size of the hole in the gun did that for no particular reason it wasn’t helpful it wasn’t anything. The man on the right really should not have been video he really just wasted time
That "man" was a woman😁
If I have a 3000 RP non digital, should i use a reg and gauge on the inlet of the gun in addition to the reg on the wall for the whole job or use it to set the pressure at the wall and remove it for better flow into the gun?
What i understand from the video is that you can leave a gauge/regulator at the gun while spraying, but leave the reg as open as possible. Use it only for finetuning. Do the major adjustment on the wall.
A question, my sata 3000 rp gun has air coming out of the cap without pulling the trigger. Not full on air just small amount of air . Needle is not sticking
Sounds like the air valve seal is either worn out or dirty. Disassemble air valve to clean or replace the seal. Carefully inspect the "seat" inside the gun where the air valve seal sits to make sure that it is clean as well. If this area isnt clean, it will allow air to bypass the seal even if the seal itself is in good shape.
HV & HP & LV & RB concerned air or paint?
hello I'm from Indonesia
Extremely dumb comment at 5:22
pretty sure she was trying to refer to the breathing example....
With his facial expression, I'm sure he wasn't excited about that.
How fast is that painter lol jokes
very informative, thank you!
15cfm on an HVLP?
Wow... That makes sense.. I'm new to the paint part of jobs, and having a big issue, now I think you nailed it .
Doc
Upland Ca
Qual o melhor bico para aplicação do clear verniz 1.3 ou 1.2 obrigado
Rp means Reduce pressure and the hvlp is a conventional one, I better Rp because you can paint with low pressure and the job look real nice and you have less over spray
sorry but HVLP is not conventional ,conventional are the older high pressure guns ,RP AKA compliant is a hybrid solution between HVLP and conventional high pressure which gives superior atomisation at a higher velocity although still not as fine as the older conventional guns
sata"s are overpriced pieces of crap I just bought a digital rp 4000b the first time I took it apart to clean it the cheap plastic air flow distribution cap was never the same leaks air out of the nozzle paid over 800$ for the gun should have bought a Devilbiss ProTech for 480$ much more durable and sprays as good if not better 😡
Frank Gadman If you will look in your Manuel it says that any time the air distribution ring is removed you must replace it. You can buy a pack of 3 for around $25 bucks here where I live.
Derp.
Wats air pursuers wall psi correct?????
then why Sata put that air valve there at all?
+Hirider stonehead You want a solid air pressure that's coming from the wall to atomize your spray or clear . You don't want a 120 psi gets stuck in your gun behind your air valve because your air setting will only have a very short distance to travel to the air cap. So, if your air setting is 30 then you want that 30 psi to have enough distance to travel so it will have a strong momentum by the time it gets to your gun.
thank you very much my friend.
exactly
I think a simpler answer is the air micrometer on the gun is for fine-tuning.
You get the air pressure close to what you need (a little more to allow for pressure drop because of the hose) at the wall, and then adjust it as needed at the gun.
HV & HP & LV = air or paint?
***** Lot's of people have problems wrapping their head around volume vs pressure. It seems you're on the right track. But when you turn hose valve half off, you increase pressure before the valve and decrease the flow after the valve. So then if you have another valve turned quarter way, you increase pressure again before the valve and reduce the flow/volume. Then you have the valve in the gun, same scenario. So all this leads to horrible air volume at the tip. So the idea is this, you want cleanest volume of air to the tip as possible without additional restrictions. It has to do with "Laminar" air flow,,,air flow with the fewest restrictions and without causing turbulence, another kind of resistance in the gun. It makes the difference between spitting the paint on and giving a nice atomized uniform spray pattern that's more reproducible..
well put. you understand the subject. its funny how other guys just look at as psi is psi. thus not understanding volume vs. psi. cracks me up some people are hard headed. xD
+David Ocampo psi is psi. and cfm is cfm
highvelocity123 v
@@latouselatrec except they directly affect each other
What's the inside diameter of a high flow fitting? I'm using 3/8 inch ID on my gun. Is it larger at 1/2 inch ID or?
they are talking about the quarter inch high flo which comes in at 0.351 in milton fittings 3/8 is 0.375 so pretty much the same but fit on the gun
@@les1ed Thanks!
May I know how much psi in wall regulator and how bigger air tank did you used? I have issue the pressure of regulator spray gun often jump out.
exp -tary I usually leave it at 40 psi unless you have a fresh air mask would need at least 60 psi
good shit. thanks
a lot of info thank you mate
Excellent
Great information
great explanation
Very good video!
very good
so your saying its better to regulate at the wall and not the gun?? which is better?
Definitely the wall
Best thing to do is get rid of your regulator at the gun and just depend on your air makeup unit...don't forget to subtract 5psi for every 20 feet of 3/8" air hose. If you need to adjust, adjust pressure on the wall.
thank you for the video it really help me a lot..
Я подумал что это два мужика!
vwdarren sent me love your videos
Makes sense👍
Great tips, thanks.
great info.
Just found out me new Mini Jet 4400 the air regulator on the
back of the gun is plastic and if you plug it into a hose that has a 100 lbs or
more the plastic piece of ^&)^) breaks . I have two of the guns and both
are broken. So i looked at my Adam II docks and the same plastic crap. Should
have bought A Harbor freight $50.00 gun . I am done with Sata.Also do NOT leave thinner in the cup it causes the seals
to shrink up and fall out . Found all this out from DAN AM Corp the Sata
distributor for the USA.
Dan Patch hook any gun up with 100 psi and you're going to blow a lot out of the gun.
We've been begging techs for the last 10 years to store guns dry for that reason. We see it over and over.
No one wants to invest any amount of money in a quality gun and see it ruin.
The money i spent there should be NOTHING on the gun made of plastic.Those Adam II docks cost as much as some paint guns and there made of PLASTIC.How much do they save by using plastic instead of Aluminum or brass.
I am using a regulator at the gun . But it will still have max pressure when you plug it in .So i am suppose to turn the wall regulator up when blowing the car off and then turn it down to spay.Or have 2 hoses.The Adam II dock cost as much as some pretty good guns cost and you make it out of PLASTIC.Probably would have cost $0.75 more to make it out of metal . Were is the quality in that.
your wall pressure for the gun (in the booth) would never go above what you need to have the right pressure at the gun factoring in your drop by feet of hose. So I'd have maybe 36 to 40 at the wall to have 24 to 26 at the gun.
you wouldn't blow a car off a car in the booth so it's not an issue.
A variety of components work together to lighten the gun. It makes the painters life easier... less fatigue and more cars per day.
Thank you!
zica tio
Great video!
uggly tshirts
deby chen uggly ass :P
Hi. Where can I buy a Sata spray gun?
Tahsin Ali if you will visit the SATA.com website and select your country/region it will tell you the authorized distributor and list all their contact information.
Thank you so much. I'm really interested in Sata spray guns. By the way, I see some Sata productions on amazon.com. Do you think Sata has online store?
Tahsin Ali SATA does not allow online sales of their products. There are a lot of fakes on Amazon and eBay.
You have to sell your soul to the devil
In other words, don’t buy the digital version!!! Reduce the pressure at the wall to make the spray gun work- blowers won’t dry the paint!
Thank you for
This tip ! This answer a lot of
Problems
Thank you for the clear explanation.
Tried it at work today, laid the clear coat down like glass😁
Fantastic help
Well good cheers