HFU620UY400J Water Treatment Filter Element Product Specification

Product Introduction

The HFU620UY400J is a cost-efficient polypropylene (PP) pleated filter cartridge designed for ultra-coarse pre-filtration in industrial and commercial water treatment systems. Manufactured with high-purity PP non-woven filter media and a lightweight yet robust pleated structure, this product specializes in removing extra-large suspended solids, gravel, large organic debris and sediment from water streams. As a primary filtration component, it acts as the first line of defense for downstream equipment, significantly reducing the risk of pipeline blockage and heavy wear of precision filters, pumps and heat exchangers. Its wide pore size and high-flow design make it an ideal choice for low-cost, high-throughput primary filtration scenarios where only large-particle impurities need to be removed.

Filtration Precision

The HFU620UY400J features a nominal filtration precision of 400 microns, with a particle capture rate of over 98% for contaminants of 400 microns and above. This ultra-coarse filtration grade is optimized for scenarios where rapid removal of large, bulky impurities is the priority, such as raw river water intake or construction site wastewater treatment. The large, uniform pore size ensures minimal flow resistance, allowing high water throughput while effectively intercepting the largest and most damaging particles in the water.

Flux

Under standard operating conditions (25℃ ambient temperature and 0.2MPa inlet pressure), the HFU620UY400J delivers a stable water flux of 220–260 L/min. Its large-pore PP media and expanded pleated surface area minimize flow friction, enabling it to handle high-volume water flow without causing excessive pressure loss. This high-flux performance makes it suitable for large-scale primary water treatment systems that require fast impurity removal and continuous operation.

Salt Rejection Rate

As an ultra-coarse physical filtration cartridge, the HFU620UY400J has no desalination capability whatsoever. 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.

Pressure Drop

The initial pressure drop of the HFU620UY400J is ≤0.01MPa 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 flow reduction, pipeline pressure fluctuations, or even damage to upstream pumps due to increased resistance.

Molecular Weight Cutoff (MWCO)

The molecular weight cutoff of the HFU620UY400J 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.

Membrane Thickness

The polypropylene filter membrane of the HFU620UY400J has a thickness of 0.6–0.7 mm. This thickened membrane design enhances the mechanical strength and impact resistance of the cartridge, enabling it to withstand the collision and abrasion of large, hard particles such as gravel and metal scraps in the water. The robust membrane structure effectively prevents rupture or deformation during long-term operation, ensuring consistent filtration performance even in harsh working conditions.

Replacement Cycle

The recommended replacement cycle of the HFU620UY400J is 1–3 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 >150mg/L) with a large amount of gravel or debris, the replacement cycle should be shortened to 2–4 weeks to avoid severe clogging. In low-turbidity systems (suspended solids content <20mg/L) with only small amounts of large particles, the cycle can be appropriately extended to 3–5 months with regular backwashing maintenance.

Features

Ultra-coarse Filtration Efficiency: 400-micron precision captures over 98% of large particles, effectively protecting downstream equipment from blockage and wear.
High Throughput Capacity: Large-pore PP media and optimized pleated structure enable a flux of 220–260 L/min, suitable for high-flow primary filtration systems.
Superior Mechanical Strength: Thickened PP membrane resists collision and abrasion from large hard particles, avoiding membrane rupture in harsh conditions.
Excellent Chemical Compatibility: The PP media is resistant to most acids, alkalis and organic solvents, adapting to complex industrial water quality environments.
Cost-effective Solution: High-purity PP material is economical and durable, providing high cost-performance for large-scale ultra-coarse filtration projects.
Easy Installation and Maintenance: Standard interface design is compatible with most industrial filter housings; the cartridge can be quickly replaced without professional tools.

Application Fields

Raw Water Intake Pre-filtration: Applied in river, lake and well water intake systems for industrial and municipal use, removing gravel, sediment and large debris to protect subsequent water treatment equipment.
Construction Site Wastewater Treatment: Suitable for filtering foundation pit water, concrete washing water and construction drainage, removing large construction debris to meet basic discharge standards.
Agricultural Irrigation Water Filtration: Used in large-scale farm irrigation systems, preventing nozzle blockage caused by sand and gravel in irrigation water and ensuring uniform water distribution.
Mining Wastewater Primary Filtration: Applied in mining drainage and mineral processing wastewater treatment, removing ore particles and rock debris to facilitate subsequent purification processes.
Industrial Circulating Water Pre-filtration: Used in steel mills, cement plants and foundries to filter circulating cooling water, removing metal scraps and large dust particles to protect heat exchangers and pumps.
Aquaculture Water Pre-treatment: Suitable for fish pond and aquaculture farm water supply systems, removing large aquatic plants and debris to improve the living environment of aquatic products.

Conclusion

The HFU620UY400J water treatment filter cartridge is a high-value ultra-coarse filtration product that combines high throughput, strong mechanical strength and cost-effectiveness. Its 400-micron filtration precision and robust PP pleated structure make it an ideal primary filtration solution for scenarios where large-particle impurity removal is the core demand. As the first line of defense in water treatment systems, 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 raw water intake systems, construction wastewater treatment or agricultural irrigation filtration, the HFU620UY400J delivers stable and reliable performance, creating significant economic value for users.

Replacement HFU620UY400J 400 Micron Polypropylene Filter Cartridge for Commercial & Industrial Primary Filtration Applications