Instruction to set up HVLP spray guns – Part1

Spray guns are now so popular that replace traditional way of painting. With a gun, all painting jobs are done efficiently in short time. Spray gun is really an ideal tool for painting. One of the most popular one is HVLP spray gun. However, some people still do not know what HVLP means and how to set up this guns. Some helpful information about HVLP will be noted below.

HVLP gun

HVLP spray gunHVLP is stand for High Volume Low Pressure that are outstanding characters of this gun. HVLP gun is a new type with better spraying method, using high volume of air rather than high pressure to spray paint, so it need lower power to run.

However, there is a confused disagreement about that gun. With the input about 50 psi, only 10 psi can be sprayed out through the cap. Besides, a large number of low-pressure air also come out. Low pressure but can spray high volume out, how does it work?

Different from older model, HVLP with lower pressure allows far more paint instead of air on the car. More paint in car, so that more paint can be sprayed through cap each time. High volume and Low pressure is actually the ideal way to save time as well as money. Though, to get the best result and highest productivities, HVLP gun requires precise and correct set up.

Because of the high requirements to set up, the detailed instruction will be stated clearly step-by-step as follow.

First step: air supply

As its name, HVLP gun needs high volume of air input. Each model requires different amount of air input that printed on the spray gun. That number shows us the minimum amount needed to operation. Moreover, besides that minimum amount needed, the capacity of compressor also must be concerned. The compressor of a HVLP gun has to maintain enough space to keep needed air constantly because of being unable to build up pressure. Should set the compressor about 90psi to run in good mood.

After setting the compressor, you will have to set the road for air pressure coming into gun. Small regulators with gauges, which is attached to the base of the gun, is supplied for that purpose.

Air dryer also needs to set up. To get the highest productivity work, ensure that your air lines are free of water or oil. In case only a little water remaining in air lines, all your work is worse and may be ruined. Little disposable put on the end of the gun is really smart method to keep air lines dry during spraying.

Second step: Suitable tip

After earliest preparation, choosing tip is one of the most important parts when setting up the gun. Each work, object or material matches with a specific type and size of tip. With a HVLP gun, Fluid Tip is recommended and a few probably supplied together with tip.

For small work such as a single panel of small part, a tip at about 1.0 with good rule of thumb is recommended. A larger size at about 1.3 to 1.4 is most suitable for whole medium objects like a car. Both size 1.0 or 1.3 to 1.4 can apply for sealers and epoxy or etching primers. Build primers require a bigger size. A tip at 1.8 to 2.3 will be suitable, the exact size depends on the thickness of painting objects.

However each work matches different tip, to range the most suitable one, you need to read the tech sheets carefully or asking additional suggestion from seller. All basic information of the gun will be stated here.