Air filters are put at the back of an air compressor to clean the air. They stop dirt, water and oil in the air and make it clean.
You have to pick a specific precision filter type based on the kind of work you will do.
Precision filters are sorted by how good they filter and what they are made of.
There are four different models of high efficiency precision filters made by Betten.
The S-class filter catches dirt and dust that are 3 microns or bigger. It also keeps the amount of oil in the air to a minimum, with only 1 part per million.
The U-level filter is the first filter. It takes out bigger dirt particles and limits the amount of oil mist to 0.5 parts per million.
The H-level filter cleans out tiny bits of solid stuff that are bigger than 0.1 microns. It also makes sure there's only a little bit of oil mist in the air, no more than 0.1 parts per million.
The F-level filter takes out tiny bits and oil mist from the air, and can catch really small dust particles.
Special filters are often used with machines that dry air. These filters are usually set up in a certain way: the first three come before the last one.
There are three filters in front of the air dryer. They help the air dryer work well and last a long time. These filters are also called security filters.
The F filter is put in the dryer's back part to clean really tiny dust and make sure the compressed air coming out is good quality.
This setup is usually good for industries that need very clean air, like food and medicine, or things like electronic parts.
You don't need to use a very advanced setup for many basic productions.
A lot of people use a filter and dryer called SUH in workshops where the air quality is not very good. This helps with things like sandblasting and cleaning surfaces.
There are different kinds of filters that use different materials to filter out unwanted particles at different levels.
The S-class filter is the first filter that is made of strong stainless steel mesh. It can handle lots of pressure and won't rust easily. It's important because it protects the back-end filter and dryer.
The next three filters use a material called polymer filter material made of glass fibers. It can filter more accurately and effectively than stainless steel, but it cannot handle as much pressure.
The compressed air precision filter model is similar from different manufacturers, and they use similar materials. You only need to know the level of filtration you need to find the right filter.