Things to Evaluate When Looking for Spray Foam Guns

by Kristen White Blogger

When you are evaluating spray foam guns, it is important to remember that not all spray guns are created equal. Choosing the right spray foam gun for your project is essential for getting the job done correctly.

To know which spray foam gun fits your need, you have to know the basics of what to look for. Knowing the details before looking for a spray foam gun will save you a lot of time because it will help you prioritize your needs and focus on the features that are important to you.

Things to Know Before Choosing a Spray Foam Gun

There are three types of spray foam guns available: purge, solvent purge, and mechanical purge. All spray foam guns work under the same principle. The chemicals are separate until they are blended in preparation for spraying. The materials harden when they are mixed and the blended mixture is used to create an insulation layer.

The primary difference between the three types of spray guns is how the foam is expelled. This means knowing which purging process you prefer is essential in determining the type of spray foam gun you need.

Purge Spray Foam Guns

Purge spray foam guns are the most popular type of guns. They have long-life mix chambers that allow for better mixing of the materials. They are also very easy to maintain. Air purge guns use blasts of compressed air to keep the chamber clean. They also have a lesser number of parts than the other kinds of spray foam guns.

Solvent Purge Spray Foam Guns

Solvent purge guns eliminate the process of drilling in the mixing chamber. These types of spray guns are less common for SPF applications and are primarily used in coating applications. Solvent purge spray foam guns also use less compressed air than purge guns. Solvent purge guns are also popular for minimizing material buildup in the mixing chamber. They also allow you to change spray patterns from small to large and vice versa quickly.

Mechanical Purge Spray Foam Gun

Mechanical purge guns are used to mix different materials thoroughly to increase the chance of achieving desirable results. A steel rod in the mixing chamber pushes out residual material to keep it clean and uncluttered. However, a possible disadvantage is mechanical purge spray foam guns have more parts than air purge guns.

If you are planning to get Graco spray rigs selecting the right equipment, including spray foam guns may sound intimidating. However, with the proper research, you can make an informed decision. You should also consult experts to get their opinion on the types of equipment that would be best for your needs and budget.