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This strainer removes solids from without filters, bags or elements

| By Mary Page Bailey

This company’s self-cleaning filters (photo) remove oversized particles from process or wastewater flows of up to 2,500 gal/min without filter elements or bags. Removing particulate matter enhances the quality of products, such as oil-based or latex paints, solvent-based or waterborne stains, high-value automotive coatings, food and beverage products and more. Various models are available for a wide range of continuous process flows. Wedgewire or perforated screens of various openings are available and interchangeable, allowing one strainer to be used for multiple applications. With no bags or elements to dispose of, this unique technology allows users to meet their plant sustainability goals. Product to be filtered enters the strainer through the inlet, with filtration occurring from the outside in. Screened particulate matter accumulates within the canister and is purged through the bottom drain as needed. Purged particles are piped away for disposal, recycling or re-use. These strainers operate continuously as a sealed device, so product stays within the piping and out of the atmosphere, which is especially important for fast-curing products like highway striping paint. The strainers are suitable for aseptic operations and work well as pre-filters upstream of membranes, centrifuges and other fine-filter media. — Spencer Strainer System, Jeffersonville, Ind.