Why Is My Hvlp Spray Gun Spitting?

Why Is My HVLP Spray Gun Spitting?

HVLP spray guns are a popular choice for painters and other professionals who need to apply a thin, even coat of paint. However, even the best HVLP spray guns can spit if they are not used properly.

In this article, we will discuss the causes of HVLP spray gun spitting, and we will provide tips on how to prevent and fix this problem. We will also discuss some common mistakes that can lead to spitting, and we will provide tips on how to avoid these mistakes.

By the end of this article, you will have a better understanding of why HVLP spray guns spit, and you will be able to prevent and fix this problem so that you can get the smooth, even finish that you want.

Problem	Cause	Solution
Spitting	Incorrect fluid viscosity Incorrect air pressure Dirty spray gun Blocked fluid nozzle	Use the correct fluid viscosity for your spray gun Adjust the air pressure to the manufacturer’s specifications Clean the spray gun according to the manufacturer’s instructions Unblock the fluid nozzle

Causes of HVLP Spray Gun Spitting

HVLP spray guns are a popular choice for painters because they produce a smooth, even finish with little overspray. However, HVLP spray guns can also spit if they are not properly adjusted or maintained.

There are a number of reasons why an HVLP spray gun might spit. Some of the most common causes include:

• Incorrect fluid settings. The fluid nozzle size and fluid pressure need to be properly adjusted for the type of paint being used and the desired finish. If the fluid settings are too high, the paint will atomize too much and spit. If the fluid settings are too low, the paint will not atomize properly and will produce a rough finish.
• Incorrect air settings. The air pressure and air volume need to be properly adjusted for the type of paint being used and the desired finish. If the air pressure is too high, the paint will atomize too much and spit. If the air pressure is too low, the paint will not atomize properly and will produce a rough finish.
• Dirty spray gun. A dirty spray gun can cause paint to spit because the paint will not atomize properly. It is important to clean the spray gun regularly to prevent this problem.
• Other factors. Other factors that can cause an HVLP spray gun to spit include:

• Using the wrong type of paint.
• Applying the paint too thickly.
• Shaking the paint can too vigorously.
• Spraying the paint in cold weather.

How to Prevent HVLP Spray Gun Spitting

There are a number of things you can do to prevent your HVLP spray gun from spitting. Some of the most important preventive measures include:

• Set fluid and air settings correctly. The fluid nozzle size and fluid pressure need to be properly adjusted for the type of paint being used and the desired finish. The air pressure and air volume also need to be properly adjusted.
• Clean the spray gun regularly. A dirty spray gun can cause paint to spit. It is important to clean the spray gun regularly to prevent this problem.
• Use the right type of paint. Some paints are more likely to spit than others. Make sure to use a paint that is designed for use with HVLP spray guns.
• Apply the paint thinly. Applying the paint too thickly can cause it to spit. Make sure to apply the paint thinly and evenly.
• Shake the paint can gently. Shaking the paint can too vigorously can cause air bubbles to form in the paint, which can lead to spitting. Shake the paint can gently before using it.
• Spray the paint in warm weather. Spraying the paint in cold weather can cause it to thicken and become more likely to spit. Make sure to spray the paint in warm weather.

By following these preventive measures, you can help to ensure that your HVLP spray gun does not spit.

HVLP spray guns are a great tool for painters, but they can be frustrating if they spit. By understanding the causes of HVLP spray gun spitting and taking steps to prevent it, you can avoid this problem and get the smooth, even finish you want.

Troubleshooting HVLP Spray Gun Spitting

HVLP spray guns are a popular choice for painters and other professionals because they can produce a smooth, even coat of paint with little overspray. However, HVLP spray guns can sometimes spit, which can be frustrating and can lead to wasted paint.

There are a number of reasons why an HVLP spray gun might spit. Some of the most common causes include:

• Incorrect fluid and air settings. The fluid and air settings on an HVLP spray gun are critical to achieving a smooth spray pattern. If the fluid pressure is too high, the paint will atomize too much and spit. If the air pressure is too low, the paint will not atomize properly and will also spit.
• Dirty spray gun. A dirty spray gun can also cause spitting. Over time, the fluid nozzle and air cap can become clogged with paint and debris, which can interfere with the spray pattern.
• Using the wrong type of fluid. Some types of paint are more likely to spit than others. Thin, watery paints are more likely to spit than thicker, more viscous paints.
• Other troubleshooting tips. If you have tried the above troubleshooting tips and your HVLP spray gun is still spitting, there are a few other things you can try:

• Try using a different brand of paint.
• Clean the spray gun more frequently.
• Adjust the fluid and air settings until you find a combination that works well for your particular spray gun and paint.
• If all else fails, you may need to have your HVLP spray gun serviced by a qualified technician.

Check the Fluid and Air Settings

The first step in troubleshooting a spitting HVLP spray gun is to check the fluid and air settings. The fluid pressure should be set between 15 and 20 psi, and the air pressure should be set between 80 and 100 psi. If the fluid pressure is too high, the paint will atomize too much and spit. If the air pressure is too low, the paint will not atomize properly and will also spit.

To check the fluid pressure, use a pressure gauge to measure the pressure at the fluid inlet of the spray gun. To check the air pressure, use a pressure gauge to measure the pressure at the air outlet of the spray gun.

If the fluid or air pressure is not within the recommended range, adjust the regulator accordingly. Once you have adjusted the fluid and air pressures, test the spray gun again to see if the spitting has stopped.

Clean the Spray Gun

A dirty spray gun can also cause spitting. Over time, the fluid nozzle and air cap can become clogged with paint and debris, which can interfere with the spray pattern.

To clean the spray gun, first remove the fluid nozzle and air cap. Then, use a cleaning solvent to clean the inside of the spray gun. Be sure to clean the fluid nozzle and air cap thoroughly, as any residual paint or debris can cause the spray gun to spit again.

Once you have cleaned the spray gun, reassemble it and test it again to see if the spitting has stopped.

Try a Different Type of Fluid

Some types of paint are more likely to spit than others. Thin, watery paints are more likely to spit than thicker, more viscous paints.

If you have tried the above troubleshooting tips and your HVLP spray gun is still spitting, try using a different type of paint. A thicker, more viscous paint is less likely to spit.

Other Troubleshooting Tips

If all else fails, you may need to have your HVLP spray gun serviced by a qualified technician. A technician can diagnose the problem and make the necessary repairs.

Here are some other troubleshooting tips that may help:

• Make sure that the spray gun is properly assembled.
• Check the fluid level in the spray gun.
• Make sure that the paint is not too thick or too thin.
• Clean the spray gun regularly.
• Use a good quality air compressor.

By following these tips, you can help to prevent your HVLP spray gun from spitting.

HVLP spray guns are a great tool for applying paint, but they can sometimes spit. By following the tips in this article, you can troubleshoot and fix a spitting HVLP spray gun.

Q: Why is my HVLP spray gun spitting?

• A: There are a few possible reasons why your HVLP spray gun might be spitting.
• The wrong fluid tip is installed. The fluid tip is the part of the spray gun that controls the amount of fluid that flows out of the gun. If the wrong fluid tip is installed, it can cause the gun to spit. Make sure that you are using the correct fluid tip for the type of fluid you are spraying.
• The fluid is too thin. If the fluid is too thin, it can cause the gun to spit. Thicker fluids are less likely to spit.
• The air pressure is too high. If the air pressure is too high, it can cause the gun to spit. Try reducing the air pressure and see if that helps.
• The gun is not properly cleaned. If the gun is not properly cleaned, it can cause the gun to spit. Make sure to clean the gun regularly with a degreaser or solvent.

Q: How can I fix a spitting HVLP spray gun?

• A: There are a few things you can do to fix a spitting HVLP spray gun.
• Check the fluid tip. Make sure that you are using the correct fluid tip for the type of fluid you are spraying. If the fluid tip is damaged, replace it.
• Thin the fluid. If the fluid is too thick, thin it with a solvent or degreaser.
• Reduce the air pressure. If the air pressure is too high, reduce it.
• Clean the gun. Make sure to clean the gun regularly with a degreaser or solvent.

Q: What can I do to prevent my HVLP spray gun from spitting?

• A: There are a few things you can do to prevent your HVLP spray gun from spitting.
• Use the correct fluid tip. Make sure that you are using the correct fluid tip for the type of fluid you are spraying.
• Use the correct fluid. Use a fluid that is the correct viscosity for your spray gun.
• Use the correct air pressure. Use the air pressure that is recommended for your spray gun.
• Clean the gun regularly. Make sure to clean the gun regularly with a degreaser or solvent.

Q: What are the signs of a clogged HVLP spray gun?

• A: There are a few signs that your HVLP spray gun may be clogged.
• The gun is spitting or sputtering.
• The gun is not spraying evenly.
• The gun is not spraying as much material as it should.
• The gun is making a loud noise.

Q: How can I clean a clogged HVLP spray gun?

• A: There are a few ways to clean a clogged HVLP spray gun.
• Use a cleaning solvent. Spray a cleaning solvent into the gun and let it sit for a few minutes. Then, turn on the gun and spray the solvent out.
• Use a cleaning brush. Use a cleaning brush to scrub the inside of the gun. Be careful not to damage the gun.
• Disassemble the gun. If the gun is still clogged after using a cleaning solvent and a cleaning brush, you may need to disassemble the gun and clean the parts individually.

Q: What are the safety precautions for using an HVLP spray gun?

• A: When using an HVLP spray gun, it is important to take the following safety precautions:
• Wear gloves and eye protection. The fluid and air used in HVLP spray guns can be harmful if they come into contact with your skin or eyes.
• Work in a well-ventilated area. The fumes from the fluid can be harmful if you inhale them.
• Do not spray near open flames or electrical equipment. The fluid can be flammable and can cause a fire if it comes into contact with an open flame or electrical equipment.
• Be careful not to spill any fluid. If you spill fluid, clean it up immediately.

Q: Where can I learn more about HVLP spray guns?

• A: There are a few resources available to learn more about HVLP spray guns.
• The internet. There are many websites that offer information about

HVLP spray guns are a great way to apply paint evenly and efficiently. However, they can sometimes spit, which can waste paint and create a mess. There are a few different reasons why a HVLP spray gun might spit, and the solution will depend on the specific cause.

If the gun is spitting because the fluid is too thin, you can thicken it by adding more solids or by reducing the amount of air pressure. If the gun is spitting because the fluid is too thick, you can thin it by adding more solvent or by increasing the amount of air pressure. If the gun is spitting because the fluid is not atomizing properly, you can try cleaning the gun or adjusting the fluid nozzle.

By following these tips, you can troubleshoot and fix a spitting HVLP spray gun. This will help you get the most out of your spray gun and ensure that you get a smooth, even coat of paint every time.

Key Takeaways

• HVLP spray guns can spit for a variety of reasons, including:
• The fluid is too thin or too thick.
• The fluid is not atomizing properly.
• The gun is dirty.
• To troubleshoot a spitting HVLP spray gun, you can:
• Thicken the fluid.
• Thin the fluid.
• Clean the gun.
• Adjust the fluid nozzle.
• By following these tips, you can get the most out of your HVLP spray gun and ensure that you get a smooth, even coat of paint every time.