Although all HVLP spray guns operate with the same objective in mind, how they accomplish this goal may differ. First, air used in the atomization process reaches the HVLP spray gun's nozzle in one of four ways: 1 standard high-pressure compressed air, which has its pressure restricted within the gun body; 2 standard high-pressure compressed air, which is assisted with a venturi feed and then filtered ambient air prior to its pressure restriction within the gun's body; 3 standard externally fed HVLP turbine air; and 4 compressor-assisted externally fed turbine air.
Items 1 and 3 have seen the most growth and ultimate acceptance in recent years. All HVLP spray guns should operate at air pressures between 0.
Although some HVLP guns with internal restrictions can exceed 10 psi air pressure, it is up to the operator to follow local regulations when necessary.
Turbine-operated HVLP systems enjoy great portability and ease of operation where compressed air is not available. This may not pose a problem to some finishers, but to others it may mean additional polishing. Turbine-generated HVLP systems may be expensive to purchase and to operate. More material is heavier to displace thus spreading a smaller area. They are considered finishing tools. The most common type will be one that requires a source of air, most of our customers use air compressors for this purpose.
The other type is an electrical airless spray gun that creates displacement with a built-in compressor, they are simply referred to as airless spray guns. Most professionals do tend to stick to the spray guns that use an external air compressor due to the benefits it provides. If you decide to go with the spray guns that need an air compressor there are some key things you need to understand. HVLP spray guns are great that they use less air flow than older guns but they do still need plenty, some people have this misconception that these new HVLP gun only need a tiny DIY compressor… wrong.
The reason you still need a large compressor is that of the duty cycle of the compressor. Most air compressors have relatively low duty cycles meaning they cannot run for hours on end unless its a commercial type of machine. You want a compressor to supply enough air that even while you are spraying you are using less air than the pump is supplying, because of this, the compressor will be able to have a rest period in between running cycles.
HVLP air flow requirement differ from model to model but they are on the lower end of what spray guns tend to use. Thanks to the higher volume of material being displaced more of it end up on the surface where the gun is being aimed. This means you will save money on paint by using less of it.
HVLP is one of the most efficient types of spray guns you can get. HVLP is ahead in transfer efficiency. Less paint is wasted in the process and you get further with less paint. Less waste means a cleaner working environment.
More paint makes it to the surface not the area around it. So more time is saved in clean up afterward. Of course, masks should be worn as a precaution but with an HVLP spray gun, the sprayer would be exposed to less dangerous fumes from the paint material due to the high volumes being sprayed. With different kind of touch up spray guns , the HVLP solution can be used for some very sensitive touch up spray work. You will find them in each body panel workshop on the globe. They are great for spraying most kinds of paints used on cars, on every coat too.
The transfer rate and efficiency of the gun give it a very professional looking finish. The paint container being either gravity feed or suction feed is placed under pressure forcing the paint material through the nozzle. A large volume of low pressure are is then intersected with the mainstream causing the atomization process.
Because of the lowered pressure, the atomized paint has less bounce back. Less overspray, greater transfer efficiency. The nozzle size determines what kind of material can be sprayed by the spray gun. A larger nozzle size means a thicker heavier material can be used. Below we will give some information relating to what kind of material is to be used with each nozzle size.
Remember this is highly preference based and should only be roughly followed it also depends on the material manufacturers recommendations. Thank you for taking the time to read our first article about HVLP spray guns.
We strive to inform our customers with good information in order for them to get the right tool for the job. If you have any questions about HVLP spray guns or anything else please comment below or interact with us on social media. We will likely release more information that is more in depth relating to how to use the guns themselves and get that professional finish.
Welcome to our first welding tips for machines article, in it we will go through [ The first thing you need to do is to decide what you need to power [ Some useful facts to remember when looking to invest in some pneumatic tools 1. A smaller air tool [ I need to disperse about 30 — 40 microns particle size into the 17 L chamber. Hi there. We have only ever used these spray guns on liquid paints.
It is not designed for powder use. You usually use powder coating machines for dry powders. Have you found a solution? The small allumiiniun spray pot needs replacement. Where can I get it or how much is a new low pressure spay gun. Your branches seem to sale plastic spray pots and I litre allumiiniun high pressure pots only Question 2 I bought a Rongpeng high pressure spay gun from you. Plse can you advise me what type of spray gun to use on a 50 L compressor.
Why do I get Coarse Texture when Spraying Coarse texture is typically the result of having too much air press and too little fluid pressure Why Do I Get Runs and Sags Runs and Sages are usually the result of too much fluid and not enough air.
This could be due to having your pressure pot turned up to high or having to large of a fluid nozzle. If you can increase your air pressure without going above the air pressure that is recommended for the HVLP gun go ahead or you may have to try to thin your paint or consider a different spray method.
Conclusion By considering these questions, you should be closer to knowing whether an HVLP Spray Gun will work well for your application needs. If your setting up your paint equipment for the first time consider download our free slideshow that covers the most important topics about painting for free here. Back to News. Email Get my coupon. Shipping policy exceptions Not all products qualify for free shipping. No-Hassle Returns Except as otherwise described below, if you are not satisfied for any reason products may be returned within 30 days of shipment for a full credit or exchange if the product is undamaged.
And one more thing he needs to follow is wearing of proper protective gear to avoid any contact of paint to any sensitive body part. Protective gears like safety goggles, rubber gloves, protective shoes and a face mask should be worn to avoid any injury as safety is the priority for every individual.
There are various cons of HVLP spray guns too as everything comes with pros and cons. The multiple problems of HVLP spray guns are:. So this was everything and anything you should know about HVLP spray guns before using them.
These guns are being preferred by people who aim expensive painting and exceptional quality coverage. We hope you like the article and for any comment and query against this article, please contact us through the comment section below.
Read more: How to use a Paint Sprayer? Skip to content HVLP stands for high volume low-pressure spray guns. The various settings are: Principle of operation HVLP spray guns are said to be the modifications of conventional spray guns. Material Viscosity You guys might know this that before applying some paints, we need to thin them for better quality and coverage. Production HVLP spray guns have been famous for so long for their excellent production. Cost HVLP spray guns are expensive as compared to any other paint sprayer or its turbine unit one.
Suitability We have been reading this for so long that the HVLP spray gun provides less overspray and gives better coverage with less wastage of paint.
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