In further developments of spray guns, especially HVLP technology, LVLP spray guns have come onto the market. Due to the reduced use of materials, they are beautiful for the home and their activities.
However, they also need to be adjusted to be effective. Why this is so and what steps are necessary to do so will be discussed below.
Why should you adjust LVLP paint spray guns?
Usually, the LVLP gun comes to your home roughly adjusted with the essential functions. However, all materials differ in terms of their viscosity and are paint-dependent, requiring a differentiated gun setting.
You can also dilute paints and lacquers at any time. However, if you do not do this, it can hurt the spraying result or even clog the nozzle.
On the other hand, if the gun pressure is set too high, this can even damage the gun, especially the sensitive internal parts. Here you can find out how to clean your spray gun and prevent blockages.
Especially with the amount of material you have advantages. Therefore, you can calculate about 40% less material than the previously used HVLP gun. It would help if you kept this in mind when preparing the paints with the solvents.
Adjusting LVLP spray gun in 5 steps (instructions)
You are now recommended to follow the steps below to adjust your LVLP gun properly.
Step 1: Correctly adjust the air pressure on the compressor or cylinder
First, you need to set the pressure on the compressor or cylinder on the pressure gauge. Since the inlet pressure is very different from the conventional pistols, a force of 1.2 to a maximum of 2.5 bar is sufficient.
Step 2: Correctly adjust the inlet pressure for the LVLP spray gun
Here you set the input pressure directly for the gun again since the pressure can be reduced due to the hose path. Therefore, it is only here that you can properly speak of the input pressure. This works with the adjusting screw, which you will find on the handle at the bottom of the gun.
To adjust the pressure as precisely as possible, it is recommended that you use a pressure gauge, which you insert between the hose and the gun.
Step 3: Set up a spot or wide jet
You should set up either the spot or wide jet according to your wishes. This is done using the screw, which is usually located at the back of the gun body. If there are two screws, it is the upper one of both.
The best way to do this is to make a spray-out on a piece of cardboard to find out the effect of turning and spraying simultaneously. Remember: The larger the areas, the more you need the wide spray.
Step 4: Adjust the amount of material as needed
Some actors like to work with the material quantity limit. This is recommended if you really want to achieve an even application of paint and always have the same amount of material.
To do this, use the material quantity feed screw located on the same axis as the needle. Keep in mind the differences you may have experienced with the HVLP gun. Therefore, a spray-out on a piece of cardboard is highly recommended to get the correct setting and better estimate the changed amount of material.
Step 5: Replace nozzle if necessary
This step is only necessary if the spray gun used and the correct air pressure does not produce the desired spray pattern. Then it would help if you thought about changing the nozzle.
You do not need special tools beyond the wrench (usually included in the set). Then perform the above steps (1-4) again in the same order.
Do LVLP spray guns need to be adjusted differently than other spray guns?
The air pressure in the LVLP spray gun is reduced compared to conventional firearms. Therefore, this must also be reduced significantly.
In addition, you need less material quantity with this paint spray gun, which can even be reduced by up to 40% in direct comparison to an HVLP gun. This will influence the settings for spot and wide jets and material quantity regulations.