In industrial production—from large-scale industrial water treatment and precision pharmaceutical processes to ultra-pure water preparation in electronics manufacturing and raw material purification in food & beverage—efficient fluid filtration is critical to ensuring smooth production, qualified product quality, and stable equipment operation. As a well-known filtration expert in the industry (Stock Code: 837936), LEFILTER’s High-Flow Filter Cartridge has become an ideal solution for many enterprises to improve production efficiency and reduce operating costs, thanks to its excellent design, outstanding performance, and wide applicability. With its unique structure and high-quality filter media, this cartridge achieves a perfect combination of high-flow processing and high-precision filtration, bringing a revolutionary breakthrough to fluid processing in various industries.
LEFILTER High-Flow Filter Cartridge features a large diameter of 6 inches (152mm) and adopts a center-rod-free design with a one-way opening structure. This design fully utilizes the internal space of the cartridge, significantly increasing the fluid flow area. Compared with traditional cartridges, under the same filtration scenario, the high-flow cartridge allows a larger volume of fluid to pass through—with a maximum flow rate of 50–90 m³/H per cartridge—greatly improving filtration efficiency. At the same time, the center-rod-free design eliminates fluid flow obstacles caused by the center rod, making fluid flow inside the cartridge smoother, effectively reducing pressure loss, and ensuring stable and efficient operation of the entire filtration system.
The cartridge uses deep-fine polypropylene or glass fiber membrane as filter media, and is constructed into a multi-layer composite progressive filtration structure. The outer filter media has relatively larger pores, which first intercept large-sized particulate impurities in the fluid (such as sediment and rust), playing a role in preliminary filtration and protecting the inner filter media. As it goes deeper into the cartridge, the pore size of the filter media gradually decreases, performing step-by-step fine filtration of tiny particles, colloids, and microorganisms in the fluid. This progressive filtration design not only combines surface filtration and deep filtration, achieving an ultra-high filtration efficiency of over 99%, but also greatly improves the dirt-holding capacity of the cartridge. Compared with ordinary cartridges, the high-flow cartridge can hold more contaminants, thereby extending the service life of the cartridge, reducing replacement frequency, and lowering maintenance costs.
The entire cartridge is made of polypropylene material and processed by hot-melt welding technology. The connection between the end caps and the filter layer, as well as between the filter media layers, is achieved through hot-melt welding—avoiding secondary contamination caused by adhesives used in traditional bonding processes. The polypropylene material itself has excellent chemical resistance, being compatible with most acids, alkalis, and organic solvents, and can maintain stable performance in a temperature range of 0–80℃. The integral hot-melt welding structure also enhances the overall rigidity and pressure resistance of the cartridge, enabling it to withstand an operating pressure of up to 0.6MPa without deformation or leakage, ensuring long-term reliable use in harsh industrial environments.
| Parameter | Standard Details | Custom Options |
|---|
| Filtration Precision | 1μm, 5μm, 10μm, 20μm, 50μm | 0.5μm (ultra-fine for electronics) |
| Diameter | 6 inches (152mm) (outer); 2.5 inches (63mm) (inner) | 5 inches (127mm)/7 inches (178mm) (outer) |
| Length Options | 10 inches (254mm), 20 inches (508mm), 30 inches (762mm) | 40 inches (1016mm) (custom length available) |
| Maximum Flow Rate | 50–90 m³/H (per cartridge) | Up to 120 m³/H (large-diameter enhanced model) |
| Operating Pressure | ≤0.6MPa | ≤0.8MPa (reinforced structure) |
| Operating Temperature | 0–80℃ (standard PP); 0–95℃ (high-temperature PP) | -10–100℃ (special material blend) |
| Filter Media | Polypropylene, glass fiber membrane | PTFE-coated media (oil-resistant) |
| Dirt-Holding Capacity | 800–1200g (20-inch model) | Up to 1500g (high-capacity media) |
The high filtration efficiency of LEFILTER High-Flow Filter Cartridge lies in its synergistic effect of structural design and media performance, following three key steps:
Pre-Filtration by Outer Media: Contaminated fluid enters the cartridge from the outer side. The large-pore outer filter media first traps large particulate impurities (≥50μm), such as pipeline rust and sediment. This step reduces the load on the inner fine media, avoiding premature clogging and ensuring long-term stable flow.
Progressive Fine Filtration by Inner Layers: After pre-filtration, the fluid flows inward through the multi-layer media with gradually reduced pore sizes. The middle layer (10–20μm pores) captures medium-sized particles (e.g., colloids and small sediment), while the innermost layer (1–5μm pores) filters tiny impurities (e.g., microorganisms and fine suspended solids). The deep-fine media structure enables "depth filtration," where contaminants are trapped not only on the surface but also within the media, maximizing dirt-holding capacity.
Smooth Outlet of Clean Fluid: The filtered clean fluid collects in the inner cavity of the cartridge and is discharged through the one-way opening. The center-rod-free design ensures unobstructed fluid flow, maintaining a low pressure drop (≤0.1MPa at rated flow) and avoiding energy loss caused by excessive pressure resistance.
Case: A petrochemical plant in Shandong used LEFILTER 10μm high-flow cartridges for pre-filtration of circulating cooling water.
Result: The cartridge replaced 5 traditional 20-inch cartridges, reducing the number of filter housings from 5 to 1. The filtration flow rate increased by 60%, and the replacement cycle extended from 1 month to 3 months—cutting annual maintenance costs by ¥40,000.
Case: A semiconductor factory in Guangdong adopted 1μm high-flow cartridges for pre-filtration of UPW systems.
Result: Particulate matter ≥1μm in raw water was removed by 99.8%, reducing the fouling rate of subsequent RO membranes by 50%. The UPW production efficiency increased by 30%, and membrane replacement costs decreased by ¥120,000/year.
Case: A dairy factory in Heilongjiang used 5μm food-grade high-flow cartridges to filter raw milk.
Result: The cartridge met FDA 21 CFR §177.1520 standards, removing impurities such as milk sediment and somatic cells. The filtration speed was 2x faster than traditional cartridges, ensuring timely processing of raw milk and reducing product waste by 8%.
Case: A pharmaceutical company in Jiangsu used 0.5μm high-flow cartridges for pre-filtration of water for injection (WFI).
Result: The cartridge achieved 99.9% removal of particles ≥0.5μm, meeting USP <1231> standards. The WFI preparation process was simplified, and the qualification rate of finished products reached 100%.
A1: With a maximum flow rate of 90 m³/H per cartridge, it can replace 4–6 traditional 20-inch cartridges (each with a flow rate of 15–20 m³/H). For example, a system requiring 180 m³/H flow only needs 2 high-flow cartridges (instead of 10 traditional ones), significantly reducing the number of housings and saving installation space by 70%.
A2: Yes—we offer low-resistance filter media for high-viscosity fluids (e.g., syrup, lubricating oil). The optimized media structure reduces flow resistance, ensuring that the flow rate is only 10–15% lower than that of low-viscosity fluids (vs. 30–40% for traditional cartridges).
A3: Replace when: ① The pressure drop across the cartridge exceeds 0.2MPa (monitored by differential pressure gauges); ② The flow rate decreases by more than 20% (under stable system pressure); ③ The filtration effect fails to meet process requirements (e.g., particulate count exceeds standards).
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