Filtration Screens

Common filtration types include mechanical filtration, which uses screens or mesh to physically block particles; depth filtration, where contaminants are captured within a thick porous medium; and surface filtration, where particles are trapped on a mesh or membrane surface. Knitted wiremesh and demister pads typically perform surface and mechanical filtration for gas and liquid streams.

A filter generally refers to any medium that removes contaminants from a fluid stream, including depth media, membranes, or mesh. A screen is a specific type of filter made from woven or knitted wire that uses defined opening sizes to separate particles or droplets by size, offering lower pressure drop and easier cleaning compared to depth filters.

Filtration screens are commonly manufactured from stainless steel grades such as SS304 and SS316, as well as copper, brass, aluminum, and specialty polymers. Material selection depends on chemical compatibility, temperature exposure, and corrosion resistance requirements specific to the application, such as oil and gas processing or pharmaceutical manufacturing.

Yes, filtration screens can be customized in wire thickness, opening size, mesh density, roll length, and shape to match specific application requirements. Manufacturers can adjust porosity from near-zero to over 98% void volume and supply custom shapes like rings, gaskets, or flattened rolls for installation in filtration systems, columns, or mist eliminators.

Mesh opening size should be selected based on the particle or droplet size that needs to be captured, along with required flow rate and acceptable pressure drop. Typical wire thicknesses range from 0.10mm to 0.30mm with 4-5mm openings, though finer or coarser configurations are available depending on whether the application prioritizes filtration efficiency or throughput.

Many filtration screens, particularly those made from stainless steel grades like SS316, are engineered to withstand high temperatures, vibration, and exposure to caustic fumes or corrosive chemicals. This makes them suitable for demanding environments such as oil and gas refining, chemical processing, and power generation where equipment protection and durability are critical.