
HFU640UY070H13 Replacement High Flow Filter Cartridge
Introduction:If you are sourcing HFU640UY070H13 replacement high flow filter cartridge for industrial RO pre-filtration and process liquid purification, this drop-in interchange coreless filter element uses UY-series polypropylene pleated media with 7-micron filtration rating. It features exclusive crescent pleated construction for enlarged filtration area, great dirt holding capacity and stable high throughput. It effectively traps fine suspended solids, silt, rust and tiny particulate contaminants, serving as reliable security pre-filter to safeguard reverse osmosis membranes and mitigate fouling risks. As a cost-effective replacement from Chinese manufacturer LEFILTER, it fits heavy-duty water treatment projects for global EPC contractors and industrial end-users, fully compatible with matching Ultipleat HFU series filter housings without modification.
We're here to help:
Easy ways to get the answers you need.
Product parameter:
Product Overview
HFU640UY070H13 belongs to the coreless Ultipleat high flow filter series. It has a nominal 40-inch length and 6-inch large outer diameter, adopting single open-end design with inside-to-outside flow pattern. The filter media is UY-grade pleated polypropylene, rated at 7 micron. End caps and integrated lifting handle are built with glass fiber reinforced polypropylene. EPDM O-ring seal comes as standard; silicone, Buna-N and FKM seals are available to adapt to diverse chemical working conditions. Thermal welding technology is applied for all connections, no adhesive is used, eliminating secondary contamination risk. The unique overlapping crescent pleat layout maximizes available filtration area, delivering high flow rate with fewer filter cartridges and cutting down investment for filter vessels. This interchangeable filter cartridge is widely deployed in seawater desalination, power plant water systems, petrochemical process water, municipal water supply and large-scale RO security filtration projects.
Working Principle
HFU640UY070H13 high flow filter cartridge runs on inside-to-outside radial filtration principle. Raw liquid flows into the inner cavity through the single open top end and passes radially outward through multi-layer pleated polypropylene media. Larger particles get captured on the inner pleat layers, while fine particles are retained via depth filtration inside the overlapping crescent pleats. This special pleat geometry evenly distributes fluid flow, prevents localized clogging and slows the rising speed of differential pressure. After purification, treated liquid flows outwards from the filter’s outer surface. Precision O-ring seal stops bypass of unfiltered fluid. All trapped contaminants remain inside the filter cartridge, making replacement and waste disposal safer. It functions as security pre-filtration, greatly lowering impurity load for downstream RO, NF membrane and ion exchange resin equipment.
Core Technical Specifications

Core Advantages
Core-less crescent pleat design:
Removes internal support skeleton, maximizes filtration area, achieves high flow with fewer cartridges and reduces housing quantity and overall project capital cost.
7μm fine depth filtration:
UY polypropylene media provides consistent fine particle interception, offering excellent pre-treatment protection for reverse osmosis membrane elements.
Broad chemical compatibility:
Full polypropylene construction provides good acid and alkali resistance, compatible with most industrial water and general process liquid working environments. Multiple seal material selections handle corrosive fluid applications.
Simple maintenance with single open-end:
Built-in lifting handle enables quick tool-free on-site replacement. Pollutants stay trapped inside the cartridge for safer handling. Thermal welded structure eliminates glue contamination risk.
Drop-in interchange replacement:
Manufactured by LEFILTER China, fully matched in dimension, interface and flow performance. Helps global industrial buyers and engineering contractors reduce spare part procurement cost.
Main Application Scenarios
Reverse osmosis security pre-filtration for seawater desalination plants
Power plant boiler feed-water and condensate-water pretreatment
Petrochemical and fine-chemical process liquid filtration
Large-scale municipal water-supply pretreatment systems
Ion-exchange resin protection filtration for water-treatment workshops
Industrial circulating water and wastewater reuse pre-filtration
Compatibility & Cross Reference

FAQ
Q1: Can HFU640UY070H13 fit my existing filter housing?
A1: Yes. It adopts 40-inch length, 6-inch outer diameter, core-less single open-end inside-to-outside flow structure, fully compatible with HFU640 series filter vessels.
Q2: When should I replace HFU640UY070H13?
A2: Replace when differential pressure rises to 2.0 bar (29 psid). Actual service life depends on raw-water impurity concentration.
Q3: What is the maximum continuous operating temperature?
A3: Max continuous operating temperature is 82℃. Long-term operation above this temperature may deform polypropylene media and reduce filtration efficiency.
Q4: Are other micron grades available?
A4: Yes. The UY series includes multiple precision grades. Custom specifications can be arranged for bulk orders.
Q5: What is the bulk order production lead time?
A5: Standard stock cartridges have lead time of 7-15 working days after deposit confirmation. Customized specifications require extended production time.
Related Products
HFU640UY100H13 Replacement Filter —10μm same dimension
HFU640UY045J Replacement Cartridge —4.5μm finer filtration
HFU640UY200J Equivalent Cartridge —200μm coarse filtration
HFU640UY400J High Flow Filter —400μm high throughput
Please fill in your procurement needs and contact information








