Industrial Self Cleaning Filters & Magnetic Filters

Typical Applications for Self-Cleaning Filters

• Process water filtration
• Cooling water and heat exchanger protection
• Pump, valve and spray nozzle protection
• Industrial wash water filtration
• Paints, coatings, resins and adhesives
• Oils, coolants and lubricants
• Chemical process liquids
• Water treatment pre-filtration
• Food, beverage and industrial process liquids, subject to material compatibility

When to Consider a Self-Cleaning Filter

A self-cleaning filter may be suitable where manual filter cleaning is frequent, labour intensive or causing process downtime. These systems are often considered when a conventional basket strainer, bag filter or cartridge filter blocks too quickly or requires regular operator attention.

• Frequent manual cleaning is required
• Solids loading is steady or predictable
• Process downtime needs to be reduced
• Operators need to avoid frequent contact with process fluids
• Flow rate or differential pressure needs to remain more consistent
• Disposable filter bags or cartridges are creating high operating costs

Self-Cleaning Filter FAQs

How does a self-cleaning filter work?

A self-cleaning filter removes solids from a liquid stream using a filter screen, element or magnetic separator. Depending on the design, accumulated solids are removed by scraping, back-flushing, rotating brushes or magnetic separation, reducing the need to manually open and clean the filter.

Can a self-cleaning filter replace a bag filter or cartridge filter?

In some applications, yes. A self-cleaning filter may reduce or eliminate the need for disposable bags or cartridges where solids loading is high enough to make manual replacement costly or time consuming. Final selection depends on the liquid, particle size, filtration rating, solids loading and process requirements.

What is the difference between scraping and back-flushing self-cleaning filters?

Scraping filters use a mechanical scraper or blade to clean the screen surface. Back-flushing filters use reverse flow or a flushing cycle to remove accumulated solids. Scraping filters are often suited to viscous or sticky liquids, while back-flushing filters are commonly used for water and compatible low-viscosity liquids.

What information is needed to size a self-cleaning filter?

Important sizing information includes flow rate, pressure, temperature, viscosity, filtration rating, solids loading, material compatibility and whether manual or automatic operation is required.