The three-stage pre-filter uses a 10" PP cotton filter cartridge, UDF filter cartridge, CTO filter cartridge or other cartridges for graded filtration of the water source. It removes large particles such as sediment and rust, adsorbs residual chlorine and odors, and eliminates organic matter, heavy metals, and other contaminants. This enhances water quality and taste, while also protecting downstream water purification equipment.
The three-stage pre-filter is typically installed at the entrance of the pipeline system or under the kitchen sink. Users can select and install specific filter types in the filter bottle based on water quality and specific filtration needs.


In addition to the three-stage pre-filter, there are also single-stage pre-filters with single-stage filter cartridges and dual-stage pre-filters with dual-stage filter cartridges. Users can choose the appropriate filter according to their needs.

The single-stage pre-filter is the most basic filtration device. Usually installed at the beginning of the water supply pipeline, it is used to filter large particles of impurities in the water, such as sediment, rust, and suspended solids. Different filter cartridges can be replaced according to needs.

The combination of commonly used PP cotton filter cartridges and CTO filter cartridges adds an additional filtration process based on the primary filter, mainly targeting finer particles and some dissolved pollutants, further enhancing the filtration effect.
The raw water first enters the first-stage PP cotton filter cartridge, removing large particles such as sediment, rust, and suspended solids from the water; Then it enters the second-stage UDF filter cartridge, adsorbing odors, chlorine, and organic compounds in the water, improving the taste of the water; Then it proceeds to the third-stage CTO filter cartridge, further adsorbing residual odors, heavy metals, and other pollutants in the water, finally resulting in filtered water.

| Material | PP and PET |
| Inlet and Outlet Connections | 1/4" or 1/2" or 1" |
| Filter Cartridge | PP cotton filter cartridge + UDF filter cartridge + CTO filter cartridge |
| Filter Cartridge Size | 10 " |
| Power Source | Manual |
| Maximum Pressure | Exceeds 20 kg |
| Accessories | Bracket, wrench, screws |
| Net weight | 16 kg |
| Gross weight | 17 kg |
| Package dimensions (Length × Width × Height) |
53.5 × 44.5 × 35.5 cm |