The Basics of an LVLP Spray Gun
from web site
What is a Low Volume, Low Pressure Spray Gun? LVLP Spray Guns is the low pressure, high volume spray guns used for precision, rapid application on both dry and wet surfaces. In the LVLP Spray Gun business the pressure and volume are measured in pounds per square inch. If the pressure is low then the gun will not spray as much paint per shot. A high pressure gun spray will give you more coverage for less money. paint Spray Gun The various types of LVLP Spray Guns
Bleed: This is the LVLP Spray Gun's trade name; it uses an open-back design to achieve a long, even spray application. You need to use a lower air pressure than the manufacturer recommends to achieve this effect. This type of spray gun does not have a cyclone or any other pumping mechanism to pull air into the system. The pressure is measured in Pounds per Square Inches, so the higher the pressure, the lower the volume.
Blower: Blower guns use a counter rotating drum that creates suction as it spins. It is generally used for very short lengths because of the low pressure and high speed. These types of guns are great for spraying just a few areas, usually on a flat or level surface, and may require only a single, high pressure bulb. Blowers also can be used on some paint systems to increase the penetration of acrylic paints and gloss paints. There are some drawbacks to the blower method of applying paint because the particles of paint are dispersed out into a wider area than with a low pressure gun.
Compressor: LVLP Spray Guns uses high pressure air compressors to apply low volume, high strength paint. The compressor may have variable pressure controls similar to the compressor in your air conditioner. If you are using the spray gun indoors, it is important that you have a good indoor air quality to assure the longevity of your compressor. Be sure to always wear protective goggles and gloves when working with paint guns.
Motor: An air compressor motor consists of an air tank, the compressor wheel, the compressor piston and the compressor fan. The compressor wheel pushes air through the compressor piston moves air into the air tank. All the parts work together to create the power for the spray gun. The size and speed of the motor is determined by the size and type of the paint system being used. Good motors allow for consistent, reliable performance and are available with different operating pressures and speeds. Some systems use only one motor, while others may use two or more motors to increase spray coverage area and portability.
Noses: A needle nose (sometimes called a cannula) allows the user to direct the spray paint at precise angles. It is usually located at the tip of the nozzle. The advantage of a needle nose is that the user can control the angle and direction of the flow. It also allows for fine control over the flow of air into the system, which reduces problems with "hot air" and increased handling noise.
PSI: This is the standard unit of measurement for measuring the force exerted per square inch. Higher PSI means higher velocity in the paint stream and correspondingly, a higher flow. Higher psi also means greater surface tension. Higher pressure results in a more even coating. Higher is also allows the user to control the overall diameter of the spray painting nozzle, making it possible to paint in smaller areas. Lowering the PSI will result in a smaller overall diameter of the nozzle and will result in a lighter weight for the compressor and reducing the need for the air compressor motor.
Flow: This refers to the total volume of air that is moved to apply the required amount of paint in a given amount of time. Higher flow rates provide higher adhesion to the top coat of the material. Higher flow rates also provide a higher degree of control over the size of the needle nose. Finally, it should be noted that a lower flow rate will have less uniform coverage of the material. There are also two types of LVLP spray guns; single stage and multiple stage. The type of gun you choose depends on the application needs of your project.
Bleed: This is the LVLP Spray Gun's trade name; it uses an open-back design to achieve a long, even spray application. You need to use a lower air pressure than the manufacturer recommends to achieve this effect. This type of spray gun does not have a cyclone or any other pumping mechanism to pull air into the system. The pressure is measured in Pounds per Square Inches, so the higher the pressure, the lower the volume.
Blower: Blower guns use a counter rotating drum that creates suction as it spins. It is generally used for very short lengths because of the low pressure and high speed. These types of guns are great for spraying just a few areas, usually on a flat or level surface, and may require only a single, high pressure bulb. Blowers also can be used on some paint systems to increase the penetration of acrylic paints and gloss paints. There are some drawbacks to the blower method of applying paint because the particles of paint are dispersed out into a wider area than with a low pressure gun.
Compressor: LVLP Spray Guns uses high pressure air compressors to apply low volume, high strength paint. The compressor may have variable pressure controls similar to the compressor in your air conditioner. If you are using the spray gun indoors, it is important that you have a good indoor air quality to assure the longevity of your compressor. Be sure to always wear protective goggles and gloves when working with paint guns.
Motor: An air compressor motor consists of an air tank, the compressor wheel, the compressor piston and the compressor fan. The compressor wheel pushes air through the compressor piston moves air into the air tank. All the parts work together to create the power for the spray gun. The size and speed of the motor is determined by the size and type of the paint system being used. Good motors allow for consistent, reliable performance and are available with different operating pressures and speeds. Some systems use only one motor, while others may use two or more motors to increase spray coverage area and portability.
Noses: A needle nose (sometimes called a cannula) allows the user to direct the spray paint at precise angles. It is usually located at the tip of the nozzle. The advantage of a needle nose is that the user can control the angle and direction of the flow. It also allows for fine control over the flow of air into the system, which reduces problems with "hot air" and increased handling noise.
PSI: This is the standard unit of measurement for measuring the force exerted per square inch. Higher PSI means higher velocity in the paint stream and correspondingly, a higher flow. Higher psi also means greater surface tension. Higher pressure results in a more even coating. Higher is also allows the user to control the overall diameter of the spray painting nozzle, making it possible to paint in smaller areas. Lowering the PSI will result in a smaller overall diameter of the nozzle and will result in a lighter weight for the compressor and reducing the need for the air compressor motor.
Flow: This refers to the total volume of air that is moved to apply the required amount of paint in a given amount of time. Higher flow rates provide higher adhesion to the top coat of the material. Higher flow rates also provide a higher degree of control over the size of the needle nose. Finally, it should be noted that a lower flow rate will have less uniform coverage of the material. There are also two types of LVLP spray guns; single stage and multiple stage. The type of gun you choose depends on the application needs of your project.
