The Difference Between HVLP vs. LVLP Airspray Guns

12 April 2022

Many manufacturers embrace spray painting as part of their general processes as it can bring tons of benefits to their products.

For one, spray painting can provide enhanced surfaces for products. The coating materials used for the process can provide varying textures and finishes. From matte to high-gloss, their products can surely attain improved appeal that cannot be achieved with other finishing methods. Another great thing about spray painting is it can provide the needed coating in a very short time. By using the right tools, spray painting can already cover a wide area in just one go.

One tool that can be used for spray painting is an airspray gun. An airspray gun is an air pressurised tool that can apply coating materials to products with the action of air. Two types of airspray guns that you can choose are High Volume Low Pressure (HVLP) and Low Volume Low Pressure (LVLP) airspray guns.

HVLP Airspray Guns

HVLP airspray guns, as their name implies, maximise a high volume of air at a low air pressure in spraying the coating materials to the products. They often utilise a large air passage and air caps. They likewise take advantage of numerous large atomising orifices around the fluid nozzle.

The air pressure of their air caps would usually range between 0.1 and 10 PSI, ensuring that they will be at least 65% transfer-efficient. The value of their air pressure, which helps in achieving ample atomisation of the coating materials, ensures that their spraying action will be softer. The softer spray of the HVLP airspray guns then helps in minimising overspray pollution and reducing material waste since most of the coating materials will just stick to the products.

What is great about HVLP airspray guns is that they have better transfer efficiency when compared to LVLP airspray guns.

LVLP Airspray Guns

LVLP airspray guns, on the other hand, utilise a low volume of air at low pressure in processing the coating materials for the finishing application. These guns typically maximise a large air passage and small air cap holes. The small holes of the air caps allow them to generate more air pressure.

LVLP airspray guns maximise less air volume, which ranges from around 5 to 18 CFM. Their air pressure, which can be between 10 to 30 PSI, helps them achieve better atomisation. Since they go beyond 10 PSI, LVLP airspray guns can easily deliver 65% or better transfer efficiency. The design of their components likewise allows LVLP airspray guns to quickly apply coatings to large objects at high volume as well as atomise coating materials with complex qualities and high viscosities.

One key advantage of LVLP airspray guns is they can atomise coating materials better than HVLP airspray guns. They can also spray faster and provide a better finish to parts and products.

If you need HVLP and LVLP airspray guns, you can contact us at Epac Productions. We can provide quality HVLP and LVLP airspray guns from Sames Kremlin. Their FPro HVLP spray guns can provide good quality finish without too much material waste. Their FPro LVLP spray guns, alternatively, can provide a superior finish due to great atomisation.



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