Filtration Media and Elements

Filtration media and elements are designed to remove suspended debris from a process stream. Filtration is a physical or mechanical process which removes insoluble particles from a liquid or gas. Base fluids may include coolants, corrosive chemicals, gasoline, diesel fuel, hydraulic fluid, lubricants, water, oil, inks, dies, and paints. Particulates and contaminants can also be filtered from gas or air. Filtration grade or Beta ratio is the most important specification to consider when selecting filtration media and elements. This micron-rating characterize a filter’s ability to remove contaminants based on particle size. Water absorption, pressure drop, maximum liquid flow, and maximum gas flow are also important parameters to consider. Choices for housing material include: aluminum, plastic, steel, stainless steel, and Teflon (DuPont Dow Elastomers).  Some filtration media and elements are portable, reusable, or disposable. Others have an integral bypass, provide high Delta P indication, or meet requirements from the U.S. Food and Drug Administration (FDA).