{"id":10953,"date":"2023-12-29T09:00:00","date_gmt":"2023-12-29T09:00:00","guid":{"rendered":"https:\/\/keikengroup.com\/?p=10953"},"modified":"2026-10-21T18:26:14","modified_gmt":"2026-10-21T18:26:14","slug":"everything-about-cartridge-filters","status":"publish","type":"post","link":"https:\/\/keikengroup.com\/en\/news\/everything-about-cartridge-filters\/","title":{"rendered":"Everything you need to know about cartridge filters"},"content":{"rendered":"

Many industries use cartridge filters for water filtration<\/a>, including water treatment in the pharmaceutical, chemical and food and beverage sectors. They are easy to install, need little maintenance and offer high filtration efficiency.<\/p>\n

They come in a range of sizes, shapes and materials to suit different applications, and are generally used either as a pre-filter to protect downstream equipment or as a final filtration step for product purity.<\/p>\n

This is a complete guide to cartridge filters.<\/p>\n

What is a cartridge filter?<\/h2>\n

A cartridge filter removes impurities and particles from liquids or gases. It has a cylindrical or pleated filter element, made of materials such as paper, cotton or polyester, held in a housing.<\/p>\n

A key characteristic of the cartridge is its micron rating, which determines the size of particles the filter can capture. The fluid to be filtered passes through the filter element, which traps and retains the impurities while letting the clean liquid through.<\/p>\n

Types of cartridge filter<\/h2>\n

Cartridge filters<\/a> can be classified by construction, mechanism and use. Common types include wound, pleated and melt-blown filters.<\/p>\n

Pleated filters are made from folded, pleated sheets of filter medium, which effectively increases the surface area of the cartridge. These are the main categories of cartridge filter.<\/p>\n

1. Depth filters<\/h3>\n

These filters trap particles within the matrix of the filter medium. They are usually made of cellulose, activated carbon or polypropylene and are used where high dirt-holding capacity and low pressure drop are needed.<\/p>\n

2. Membrane filters<\/h3>\n

Made from a thin material containing a semi-permeable membrane, these filters selectively allow specific substances through while blocking particles and impurities. Membrane materials such as nylon, PTFE or PVDF physically restrict the passage of unwanted elements.<\/p>\n

They are often used in medical laboratories that require high purity, and are widely used in the pharmaceutical industry, biotechnology<\/a> and food and beverage processing.<\/p>\n

3. Activated carbon filters<\/h3>\n

These filters are filled with activated carbon, which removes impurities from liquids and gases. They are used in water purification, air purification and gas processing.<\/p>\n

4. Absolute-rated filters<\/h3>\n

These filters remove particles of a given size or larger with very high efficiency. They are used in critical environments where even very low levels of contamination could be harmful.<\/p>\n

5. Spun-bonded cartridge filters<\/h3>\n

Made of spun polypropylene fibres bonded together into a non-woven material, these filters are cost-effective and widely used in water treatment, food and beverage processing and the pharmaceutical industry.<\/p>\n

6. Wound cartridge filters<\/h3>\n

These filters are made by winding a yarn around a central core, creating a multilayer porous filter. The material is usually cotton, polypropylene or glass fibre, and the winding pattern determines the filtration efficiency.<\/p>\n

They are often used where chemical or high-temperature resistance is required.<\/p>\n

7. Ceramic cartridge filters<\/h3>\n

These cartridge filters<\/a> are made of ceramic material. They are durable and withstand high temperatures, making them suitable for industrial applications requiring high-efficiency filtration.<\/p>\n

8. Stainless steel cartridge filters<\/h3>\n

Made of stainless steel, these filters are used in high-temperature, high-pressure applications such as oil and gas filtration, chemical processing and water treatment.<\/p>\n

9. High-flow cartridge filters<\/h3>\n

Designed specifically for high-flow applications, these filters have a larger diameter than standard cartridges. They are useful in industrial applications such as water treatment and HVAC systems.<\/p>\n

How a cartridge filter is built<\/h2>\n

Cartridge filters consist of a cylindrical element enclosed in a housing. The filter element is usually made of porous materials such as cellulose, polyester or polypropylene, and captures particles and other impurities as the fluid passes through.<\/p>\n

A cartridge filter generally includes these components:<\/p>\n