How Do Screen Filters Work?

Screen filters work by using a perforated, wedge wire, mesh, or slotted screen as a physical barrier between incoming dirty water and downstream equipment. As water flows through the screen, suspended particles larger than the screen openings are trapped on the screen surface. Over time, this debris buildup increases differential pressure across the filter, which indicates that the screen needs to be cleaned.

Basic Filtration Process

• Water enters the filter housing through the inlet
• The screen captures particles larger than the selected micron size
• Filtered water exits through the outlet
• Captured debris is removed manually or through an automatic cleaning cycle

Screen filtration is especially useful when the goal is to remove larger suspended solids before they reach sensitive equipment. Unlike disposable filters, many screen filters can be cleaned and reused, making them a practical choice for high-flow water systems.