5 Micron 20” Whole House String Wound Water Filter Replacement Cartridge for Well Water Filtration

String Wound Water Filter Replacement Cartridge is a type of widely used water filtration component, primarily designed to replace worn-out or expired string wound filter cartridges in various water filtration systems.

It is constructed with a core (usually made of polypropylene or stainless steel) around which high-quality filtration materials such as polypropylene, cotton, or glass fiber are tightly and evenly wound in a specific pattern. The winding density and precision determine the filtration efficiency and dirt-holding capacity of the cartridge.

One of its key features is the graded density structure. The outer layer has a relatively loose winding, which can capture larger particles, while the inner layer is more tightly wound to trap smaller impurities. This design allows the cartridge to effectively remove a wide range of contaminants, including sediment, rust, sand, silt, and suspended solids, with filtration accuracies typically ranging from 1 micron to 100 microns, catering to different filtration needs.

Another advantage is its high dirt-holding capacity. The string wound structure provides a large surface area and sufficient space to retain contaminants, enabling it to handle more impurities before needing replacement, thus extending the service life and reducing maintenance frequency. Additionally, it offers good chemical compatibility, making it suitable for filtering various liquids besides water, such as certain solvents and mild chemicals, depending on the specific material of the winding strings.

In terms of applications, it is commonly used in residential water filtration systems (like under-sink filters, whole-house filtration systems), commercial settings (such as restaurants, hotels for pre-filtering tap water), industrial pre-treatment (as a pre-filter for reverse osmosis systems, ultrafiltration systems to protect more expensive downstream filters), and aquariums to maintain clean water for aquatic life.

When replacing, it is important to select the correct size (including length and diameter) to match the filter housing, and follow the manufacturer’s instructions for proper installation to ensure a tight seal and avoid bypass. The replacement frequency depends on factors such as water quality, water flow rate, and usage, generally ranging from 1 to 6 months. Regular replacement is crucial to maintain optimal filtration performance and prevent contaminants from being released back into the water.