HFU620UY045J Water Treatment Filter Cartridge
Product Introduction
The HFU620UY045J is a reliable medium-scale industrial water treatment filter cartridge, engineered with high-quality synthetic fiber media and a reinforced structural frame. Designed for efficient pre-filtration and coarse filtration applications, this cartridge is optimized to balance dirt-holding capacity, flow stability, and operational durability. It is tailored to meet the demands of industrial, commercial, and light municipal water treatment systems, providing effective protection for downstream equipment such as precision filters, pumps, and heat exchangers by capturing large particulate contaminants.
Filtration Precision
The HFU620UY045J features a nominal filtration precision of 45 microns. Its synthetic fiber media is structured with a graded pore design, which enables efficient capture of suspended solids, sand particles, large rust fragments, and coarse colloidal contaminants with a particle size of 45 microns and above. This precision level is ideal for coarse filtration scenarios, where the primary goal is to remove large impurities and extend the service life of subsequent fine filtration components.
Flux
Under standard operating conditions (a temperature of 25℃ and an inlet pressure of 0.3 MPa), the HFU620UY045J achieves a rated flux of 45 L/min. The optimized fiber arrangement and large pore structure minimize flow resistance, allowing for high-volume water throughput without excessive pressure buildup. This flux rate is well-suited for medium-scale water treatment systems, including industrial cooling water circulation, commercial central water supply pre-filtration, and municipal tap water coarse purification.
Salt Rejection Rate
As a particulate filtration cartridge, the HFU620UY045J is not designed for salt removal. Its core function focuses on the physical separation of solid contaminants from water, rather than the rejection of dissolved salts or ions. Therefore, the product has a negligible salt rejection rate and is not a substitute for reverse osmosis (RO) or nanofiltration (NF) membrane elements in desalination or deionization processes.
Pressure Drop
The initial pressure drop of the HFU620UY045J is less than 0.008 MPa when operating at the rated flux. As coarse contaminants accumulate on the filter surface over time, the pressure drop will gradually increase. To ensure optimal system efficiency and avoid unnecessary energy consumption, it is recommended to clean or replace the cartridge once the pressure drop reaches 0.07 MPa.
Molecular Weight Cutoff (MWCO)
The HFU620UY045J operates based on a particle size-based screening mechanism, rather than molecular weight separation. The MWCO parameter is primarily applicable to membrane filtration products (e.g., ultrafiltration, microfiltration membranes) that separate substances according to their molecular size and structure. Thus, the HFU620UY045J does not have a specific molecular weight cutoff value.
Membrane Thickness
The synthetic fiber filter media layer of the HFU620UY045J has a thickness of 1.3 mm, which balances efficient coarse filtration and enhanced dirt-holding capacity. The composite structure, including the protective non-woven pre-filter layer and the rigid support mesh, has an overall thickness of 3.4 mm. This robust design enhances the cartridge’s mechanical strength, preventing deformation or damage during backwashing, high-pressure flushing, and long-term continuous operation.
Replacement Cycle
The recommended replacement cycle of the HFU620UY045J ranges from 2 to 6 months, depending on the inlet water quality and operating conditions. In water environments with high concentrations of coarse suspended solids (exceeding 60 mg/L), the replacement cycle may be shortened to 1–2 months. For well-pretreatment water systems with low coarse contaminant levels, the service life can be appropriately extended, but it should not exceed 6 months to prevent microbial growth, filter clogging, and secondary pollution.
Features
- High dirt-holding capacity for coarse contaminants: The graded pore synthetic fiber media can trap a large volume of sand, rust, and large suspended solids, extending the service life of the cartridge and reducing maintenance frequency.
- Ultra-low initial pressure drop: The large-pore fiber structure minimizes flow resistance, lowering energy consumption and reducing the operational cost of the water treatment system.
- Chemical resistance: The synthetic fiber media is resistant to mild acids, alkalis, and organic solvents, making it suitable for a wide range of industrial water treatment environments.
- Durable construction: Reinforced end caps and an anti-deformation support frame enhance the cartridge’s pressure-bearing capacity, ensuring stable operation under high-flow and high-pressure conditions.
- Easy maintenance: The standardized size design allows for quick replacement without specialized tools, improving the maintenance efficiency of the system.

Application Fields
- Industrial cooling water circulation systems: Used to remove coarse suspended solids from cooling water, preventing pipeline clogging and heat exchanger scaling, and extending equipment service life.
- Commercial central water supply pre-filtration: Applied in shopping malls, hotels, and office buildings to pre-filter tap water, removing large impurities and protecting downstream fine filtration equipment.
- Municipal tap water coarse purification: Employed in small-scale water treatment plants to remove sand and rust from raw water, improving the efficiency of subsequent fine filtration processes.
- Light industrial process water pre-filtration: Utilized in the pre-filtration of rinse water for metal processing and plastic manufacturing, preventing large particles from damaging production equipment.
- HVAC circulating water systems: Suitable for central air conditioning and cooling tower circulating water systems to reduce pipeline wear and equipment maintenance costs.
Conclusion

The HFU620UY045J water treatment filter cartridge is a cost-effective, high-efficiency coarse filtration product that excels in handling large particulate contaminants. It is specifically designed to address the challenges of coarse impurity removal in medium-scale water treatment systems, effectively protecting downstream fine filtration equipment and improving the overall stability of the water treatment process. While it lacks salt rejection and molecular weight cutoff capabilities, its outstanding coarse filtration performance, low energy consumption, and easy maintenance make it an ideal choice for industrial cooling water systems, commercial water supply pre-filtration, and municipal tap water coarse purification projects.
Related products
- HFU620UY045J20: A fine-filtration variant of the same series with 20-micron filtration precision, suitable for scenarios requiring stricter particulate control after coarse filtration.
- HFU620UY060J: A high-flow model with a rated flux of 60 L/min, ideal for large-scale water treatment systems with higher throughput demands.
- HFU620UY045J60: An extra-coarse filtration model with 60-micron precision, designed for pre-filtration of high-sediment raw water to further extend the service life of subsequent filter cartridges.
- HFU620 Series Backwash Kit: A dedicated accessory that can effectively flush trapped coarse contaminants and extend the service life of the cartridge by 25% on average.
- HFU620 Series Filter Housing: A matched pressure-bearing housing that is compatible with all HFU620 series cartridges, providing a complete and sealed coarse filtration solution.

