Liquid Filters

By Michelle Burton
Liquid filters are mechanisms that are used to remove impurities from liquids. These impurities may be introduced into the liquids from foreign sources or they may occur naturally. Liquid filters work by utilizing a substance that is porous or permeable as a filter. The substance allows liquids to pass through, but it catches larger particles or impurities that need to be extracted from the liquid. The result is filtered liquids that are free from contaminants, toxic substances, bacteria, particles, etc.

Liquid filters are typically used to purify liquids or extend the life of an object such as a pipe. In the case of pipes, liquid filters can help extend the life of the pipe by extracting materials that may cause erosion. Liquid filters help to remove bacteria and toxic particles from liquids in order for them to be recycled or to prevent them from spoiling. In order for the filtration process to work, some form of pressure is applied to force the liquid through the filter. The type of pressure method that is used depends on the type filtration system.

There are several types of filtration systems including: vacuum dehydration systems, high-flow and low-flow filtration systems, multifilament mesh and bearing filtration systems. Vacuum dehydration systems use powerful vacuums to force liquid though filters at a fast or “high-flow” rate. In cases involving high acid, water and particle counts, high-flow filtration systems are used whereas low acid, water and particle counts require low-flow filtration systems. Multifilament mesh is more of a sifter. This woven element is great for sifting rough or coarse particles. Bearing filtration systems are used for performance oil. This system keeps oil clean by filtering out dirt, particles and impurities that may disrupt the balance of the oil's makeup. As a result, performance is maximized, the life of the oil is extended and effectiveness increases.

One of the most popular or common types of liquid filters is the water filter. Water filters are used in residential settings, office settings, schools, etc. Water filters trap elements such as salt, chlorine and lead while allowing water molecules to pass through. In most water filters, Carbon is the main element used to remove impurities as it has one of the best performance ratings among other elements of the same type. By removing impurities from water, the result is better tasting, higher quality water. Many consumers think of filtered water as “pure water” and it is considered a good alternative to spring water.

In addition to schools, residential settings and offices, liquid filters are also commonly used in the following settings and industries: oil and gas wells, cosmetics, manufacturing, paper mills, air conditioning, food and beverage, foundries and textile mills and ship builders. When choosing the correct liquid filter or filtration system the most important thing to consider is the “amount of permeability.” The amount you will need depends on the application.