Filters are put at the back of air compressors to get rid of dirt, water and oil in the air. They make the air clean.
You have to choose the right kind of precision filter based on the place where you are going to use it.
We group precision filters based on their cleaning accuracy and the stuff used to make the filter part.
The S-class filter, which is a pre-filter, can get rid of solid particles that are 3 microns or larger. It also makes sure that there is only 1 part per million of oil mist in the air.
The U-level filter is like the first filter. It takes out dirt that is bigger than 1/1000 of a millimeter. It also makes sure there is only a small amount of oil mist, about 0.5 parts per million, in the air.
The H-level filter is like a strainer that takes out tiny pieces of dirt that are 0.1 micrometers or bigger. It also helps keep the air clean by limiting the amount of oily vapor to 0.1 parts per million by weight.
The F-level filter can get rid of tiny dirt particles that are 0.01 microns or bigger. It also controls the amount of oil mist in the air to 0.01 parts per million by weight. This filter is really good at getting rid of really small bits of dust.
Precision filters work with machines that dry air. They are usually set up as the first 3 filters after the first one.
Three filters called S, U, and H are put in front of the air dryer machine. These filters help the machine run well for a long time and keep it safe. They are also called security filters.
A special filter called the F filter is put in the back of the dryer to clean really tiny bits of dust. This way, the air that comes out of the dryer is good quality.
This setup is good for businesses like food and healthcare, electronics, etc. because they need really clean compressed air.
For a lot of basic work, you don't have to use really complicated technology.
Lots of people use the SUH filter and dryer together because it works well in places where the air quality is not great, like in workshops where sandblasting or blowing surfaces happens.
There are different kinds of filters that have different materials for their filtering part at different levels.
The S-class filter is the first filter that uses a strong stainless steel mesh to stop dirt and protect the other filters. It can handle high pressure and won't rust.
The next three filters use a material called polymer filter material (made from glass fibers). They can filter things more accurately than stainless steel, but they can't handle as much pressure.
The design of a compressed air precision filter is basically the same from different makers. They also use similar materials. All you need to do is to figure out your filtering needs and you can easily choose the right filter.
