A 20-inch yarn polypropylene string wound filter cartridge is a type of filtration device made from polypropylene yarn. It is designed to remove particulates from liquids, making it suitable for various applications, including:

1. Water Treatment: Used in municipal and industrial water filtration systems to improve water quality.
2. Food and Beverage: Ensures cleanliness in processes by filtering out contaminants.
3. Chemical Processing: Protects equipment by removing sediments from chemicals and solvents.
4. Oil and Gas: Helps in separating solids from fluids in oil and gas operations.

This cartridge is effective for a range of particle sizes and is valued for its durability and resistance to chemicals.