Filter Cartridges

WEBSTER offers industry-leading liquid filtration options to serve industrial, life sciences and water applications. Liquid filter cartridges are a common and versatile solution used in a wide array of applications where there are varying flow rates and contamination removal requirements. Different filter media and membranes are available in the cartridge format, each suitable for specific needs; ranging from coarse pre-filtration for high-dirt holding capacity in industrial applications to fine high purity filtration suitable for pharmaceutical, food and beverage and water applications.

How Are Filter Cartridges Used And How Do They Work?

Filter cartridges are used to fulfill contaminant control and fluid cleanliness requirements by removing contaminants from water, oils, solvents, fuels, aqueous solutions, and other fluids. Filter cartridges can be used as a pre-filter for particulate removal or as a final filter for virus filtration, or microbial removal. They may also be validated as sterilizing grade or for microorganism reduction.

Typically, a depth-style filter cartridge will capture contaminants at multiple levels within the tapered pore structure. Pleated filters and those with a more uniform pore design, use surface filtration where contaminants larger than the pore size of the media will be trapped on the surface. These cartridges are typically placed inside a housing (vessel) where the fluid will flow through to be filtered.

Filter Cartridge Configuration and Construction Styles

    ● Depth (melt-blown)

    ● Pleated (conventional fan-pleat or laid-over pleat)

    ● Wound (string wound or spiral wound)

Filter Medium and Membranes

    ● Polymeric/Synthetics – Polypropylene (PP), polyphenylene sulfide (PSS), polyethersulfone (PES) and nylon

    ● Membranes – Fluoropolymers (e.g., polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF) (hydrophilic) and polyester (PE)

    ● Yarns – Cotton, glass fiber, polypropylene, polyester, nylon and polyphenylene sulfide (PPS)