HFU660UY400J Water Treatment Filter Element Product Specification

Product Introduction

The HFU660UY400J is a heavy-duty, ultra-high-flow polypropylene (PP) pleated filter cartridge engineered for ultra-coarse pre-filtration in mega-scale industrial and municipal water treatment systems. Manufactured with high-strength, high-density PP non-woven filter media and a reinforced pleated structure with an expanded filtration area, this product is designed to efficiently capture extra-large suspended solids, gravel, rock debris, metal scraps, and bulky organic waste from high-volume water streams. As a critical first-stage filtration component, it serves as a robust protective barrier for downstream precision equipment—such as fine filter cartridges, reverse osmosis membranes, pumps, and heat exchangers—effectively reducing the risk of severe pipeline blockage, equipment abrasion, and premature failure. Its ultra-large pore size and optimized structural design make it a cost-effective, high-performance solution for scenarios where rapid removal of large, damaging particles is the core requirement.

Filtration Precision

The HFU660UY400J features a nominal filtration precision of 400 microns, with a particle capture rate of over 99% for contaminants of 400 microns and above. This ultra-coarse filtration grade is optimized for high-flow raw water intake and heavy-industry wastewater pre-filtration scenarios. The uniform, large-pore structure of the PP media ensures minimal flow resistance, allowing ultra-high water throughput while reliably intercepting the largest and most destructive particles in the water. This precision balances efficient impurity removal and flow efficiency, making it ideal for systems that prioritize high volume over fine particle control.

Flux

Under standard operating conditions (25℃ ambient temperature and 0.2MPa inlet pressure), the HFU660UY400J delivers a stable water flux of 400–450 L/min. Its large-pore PP media and maximized pleated surface area minimize flow friction and pressure loss, enabling it to handle ultra-large-volume water flow continuously without compromising filtration stability. This high-flux performance makes it suitable for mega-scale water treatment projects, such as municipal raw water intake plants, large mining wastewater treatment systems, and heavy-industry circulating water pre-filtration lines.

Salt Rejection Rate

As an ultra-coarse physical filtration cartridge, the HFU660UY400J has no desalination capability. Its salt rejection rate is less than 2%, which means it cannot intercept any dissolved inorganic salts, ions, or small-molecule organic compounds in water. The product’s core function is strictly limited to the separation of large, insoluble particulate impurities, rather than chemical purification, salinity reduction, or water softening processes.

Pressure Drop

The initial pressure drop of the HFU660UY400J is ≤0.006MPa when operating at the rated flux. During prolonged use, the pressure drop will gradually increase as large impurities accumulate on the filter surface. When the pressure drop reaches 0.1MPa, it is recommended to replace the filter cartridge promptly. Delayed replacement may lead to significant system flow reduction, pipeline pressure fluctuations, increased energy consumption of upstream pumps, or even pump damage due to excessive resistance.

Molecular Weight Cutoff (MWCO)

The molecular weight cutoff of the HFU660UY400J is 800,000 Dalton. This parameter indicates that the filter cartridge can effectively retain macromolecular substances with a molecular weight of 800,000 Dalton and above, including large colloidal aggregates, industrial sludge clumps, and bulky organic debris. Meanwhile, water molecules, dissolved minerals, and small-molecule organic substances can pass through the filter media unimpeded, ensuring maximum flow efficiency and minimizing the energy consumption of the entire water treatment system.

Membrane Thickness

The polypropylene filter membrane of the HFU660UY400J has a thickness of 0.8–0.9 mm. This thickened membrane design, combined with a reinforced inner and outer support frame, significantly enhances the mechanical strength, impact resistance, and abrasion resistance of the cartridge. It enables the filter to withstand the collision and friction of large, hard particles such as gravel, metal scraps, and rock debris in the water, effectively preventing membrane rupture or deformation during long-term operation in harsh working conditions.

Replacement Cycle

The recommended replacement cycle of the HFU660UY400J is 3–6 months, which varies depending on the actual water turbidity and impurity size of the application site. In extremely high-turbidity water systems (suspended solids content >250mg/L) with a large amount of gravel or metal scraps, the replacement cycle should be shortened to 3–4 weeks to avoid severe clogging and system downtime. In low-turbidity systems (suspended solids content <30mg/L) with only small amounts of large particles, the cycle can be appropriately extended to 6–8 months with regular high-pressure backwashing maintenance.

Features

High-efficiency Ultra-coarse Filtration: 400-micron precision captures over 99% of large particles, providing robust protection for downstream precision equipment against blockage and abrasion.
Ultra-high Flow Capacity: Expanded pleated surface area and large-pore media enable a flux of 400–450 L/min, catering to the needs of mega-scale industrial and municipal water treatment systems.
Superior Mechanical Durability: Thickened PP membrane and reinforced support frames resist collision and abrasion from large hard particles, ensuring stable performance even in harsh working conditions.
Excellent Chemical Compatibility: The PP media is resistant to most acids, alkalis, and organic solvents, adapting to complex industrial water quality environments such as mining, petrochemical, and steel production.
Exceptional Dirt-holding Capacity: Optimized pleated structure expands the impurity storage space, reducing the frequency of cartridge replacement and lowering long-term operational costs.
Easy Installation and Maintenance: Standard interface design is compatible with most industrial filter housings; the cartridge can be quickly replaced without professional tools, minimizing system downtime.
Eco-friendly and Safe: High-purity PP material is non-toxic and can be recycled or disposed of in accordance with general industrial waste regulations, minimizing environmental impact.

Application Fields

Municipal Raw Water Intake Pre-filtration: Applied in large-scale river, lake, and reservoir water intake systems, removing gravel, sediment, and large debris to protect subsequent coagulation, sedimentation, and precision filtration equipment.
Mining and Mineral Processing Wastewater Treatment: Suitable for filtering mining drainage, mineral processing wastewater, and tailings water, removing ore particles and rock debris to meet strict environmental discharge standards or enable water recycling for mining operations.
Heavy Industry Circulating Water Pre-filtration: Used in large steel mills, cement plants, and petrochemical complexes to filter circulating cooling water, removing metal scraps and large dust particles to protect heat exchangers, pumps, and large-diameter pipelines.
Large-scale Construction Site Wastewater Treatment: Applied in filtering foundation pit water, concrete washing water, and construction drainage for mega-projects, removing large construction debris to meet basic discharge requirements and enable water recycling.
Offshore Platform and Marine Water Treatment: Suitable for offshore oil and gas platforms to filter ballast water and process water, removing marine debris and sediment to protect marine equipment from corrosion and blockage.
Agricultural Water Conservancy Project Filtration: Used in large-scale irrigation systems and water transfer projects, preventing nozzle and pipeline blockage caused by sand and gravel to ensure uniform water distribution for large-area farmland.

Conclusion

The HFU660UY400J water treatment filter cartridge is a high-performance ultra-coarse filtration product that integrates ultra-high flow capacity, superior mechanical durability, and cost-effectiveness. Its 400-micron filtration precision and robust PP pleated structure make it an ideal primary filtration solution for mega-scale industrial and municipal water treatment systems. As the first line of defense in water treatment processes, it effectively eliminates bulky, damaging impurities, reduces the operational burden of downstream precision equipment, extends the service life of the entire water treatment line, and lowers overall maintenance costs. Whether deployed in municipal raw water intake plants, mining wastewater treatment systems, or heavy-industry circulating water pre-filtration lines, the HFU660UY400J delivers stable and reliable performance, creating significant economic and environmental value for users.

Replacement HFU660UY400J 400 Micron Polypropylene Filter Cartridge for Commercial & Industrial High-volume Ultra-coarse Primary Filtration Applications