PALL HFU640UY700H13W is a coreless wide-diameter filter cartridge within Pall Ultipleat HFU series, widely deployed in industrial raw water pretreatment and RO membrane front-end security filtration projects. Our interchangeable aftermarket HFU640UY700H13W fully replicates original crescent pleat layout, single open-end construction, integrated lifting handle and H13 U-cup sealing specifications, enabling direct plug-and-play installation inside standard Pall high flow filter housings without any equipment retrofitting. Manufactured with gradient polypropylene pleated media, this replacement cartridge delivers stable high flow capacity, reliable 70μm particle interception and outstanding dirt holding capability. Many water treatment EPC clients pair HFU660UY020J filter cartridge and HFU660GF060H13 glass fiber filter element with HFU640UY700H13W alternatives to construct integrated multi-stage water purification systems.
PALL HFU640UY700H13W – Ultipleat High Flow Pleated Filter Cartridge
PALL HFU640UY700H13W is a coreless wide-diameter filter cartridge within Pall Ultipleat HFU series, widely deployed in industrial raw water pretreatment and RO membrane front-end security filtration projects. Our interchangeable aftermarket HFU640UY700H13W fully replicates original crescent pleat layout, single open-end construction, integrated lifting handle and H13 U-cup sealing specifications, enabling direct plug-and-play installation inside standard Pall high flow filter housings without any equipment retrofitting. Manufactured with gradient polypropylene pleated media, this replacement cartridge delivers stable high flow capacity, reliable 70μm particle interception and outstanding dirt holding capability. Many water treatment EPC clients pair HFU660UY020J filter cartridge and HFU660GF060H13 glass fiber filter element with HFU640UY700H13W alternatives to construct integrated multi-stage water purification systems.
Product Overview
PALL HFU640UY700H13W adopts the classic Ultipleat core-free 6-inch wide diameter pleated design with inside-out flow direction. Optimized crescent pleat structure maximizes effective filtration area. This 40-inch long high flow cartridge with 70μm filtration grade is extensively applied in seawater desalination, power plant water treatment and municipal water supply projects. Adopting this cartridge helps reduce the total quantity of filter cartridges and lowers investment cost for filter vessels. However, high price and long import delivery cycles of genuine HFU640UY700H13W bring budget pressure and project schedule risks to factory operators and engineering contractors. Our factory produces fully interchangeable replacement cartridges to match original filtration performance with competitive pricing and shorter lead time.
Core specifications of HFU640UY700H13W: 6 inch outer diameter, 40 inch nominal length, 70μm filtration rating, UY gradient polypropylene media, H13 NBR U-cup seal with customized structural configuration. End caps, drainage support layers and outer protective wrap are reinforced polypropylene. All components adopt thermal fusion molding without adhesive, effectively avoiding fiber shedding and secondary contamination to process water. The maximum continuous operating temperature reaches 82°C, maximum allowable differential pressure up to 3.4 bar, suitable for 24/7 uninterrupted industrial operation.
Every batch of HFU640UY700H13W cartridges undergoes dimensional tolerance inspection, bubble point efficiency testing and pressure tightness verification to guarantee seamless interchangeability. It efficiently traps suspended solids, pipeline rust, sediment and large colloids, alleviating RO membrane fouling risks and offering reliable protection for downstream membrane modules, water pumps and control valves.
Filtration Working Principle
PALL HFU640UY700H13W utilizes mature inside-out filtration flow path. Driven by system pipeline pressure, raw water enters the inner cavity of the coreless cartridge and permeates outward through multi-layer gradient pleated media. Coarse sediment and large flocs are captured by inner pleated layers, while fine particles and colloids prone to cause membrane clogging are deeply intercepted by outer media layers.
Optimized crescent pleat arrangement minimizes fluid dead zones and prevents media compression under pressure, maximizing dirt holding volume. All trapped contaminants remain sealed inside the cartridge during replacement, avoiding secondary particle leakage and clean pipeline pollution. After purification, treated water flows to subsequent processing units. Operators shall replace cartridges timely once inlet-outlet differential pressure rises to 25–35 PSID to restore system rated flow performance.
Core Competitive Advantages
Full Drop-in Interchangeability:
Matches original outer dimensions, end cap shape, lifting handle and H13 U-cup sealing standards; no housing modification required to reduce on-site maintenance time.
Stable 70μm Filtration Grade:
Gradient polypropylene depth media ensures consistent impurity removal performance, perfectly suited for raw water coarse pre-filtration.
Excellent Dirt Holding Capacity:
Expanded effective filtration surface slows differential pressure increase and extends service cycles.
Cost & Supply Stability:
Factory direct supply eliminates intermediate links and provides shorter lead times compared with imported genuine HFU640UY700H13W cartridges.
Standardized Batch Inspection:
Complete quality testing procedures ensure stable performance for large-scale engineering orders.
Main Application Scenarios
Seawater & brackish water desalination RO security pre-filtration
Thermal power plant boiler make-up water and condensate polishing
Petrochemical circulating water and process liquid purification
Industrial raw water pretreatment
Industrial wastewater reuse advanced filtration
Large municipal water treatment projects
FAQ
Q1: Can aftermarket HFU640UY700H13W be directly installed into original Pall Ultipleat filter housings?
A1: Yes. All critical dimensions and H13 U-cup sealing structure comply with original factory standards. Plug-and-play installation is supported without extra accessories or housing adjustments.
Q2: What does each code of model HFU640UY700H13W represent?
A2: HFU=Ultipleat High Flow series; 640=6 inch OD, 40 inch length; UY=gradient polypropylene pleated media; 700=70 micron rating; H13=NBR U-cup seal; W=customized structural design.
Q3: What differential pressure value reminds users to replace the cartridge?
A3: Inlet-outlet differential pressure is the core reference indicator. When pressure difference reaches 25–35 PSID, filter media reaches dirt holding limit. Working conditions with high raw water turbidity need more frequent replacement.
Q4: Can HFU640UY700H13W filter cartridge be backwashed and reused?
A4: It is disposable pleated filter consumable. Fine colloids and micro-impurities penetrate into media pores. Regular backwashing cannot fully recover filtration efficiency, so timely replacement is recommended.
Q5: Are other micron ratings and seal types available for HFU640 series?
A5: Yes. We provide HFU640 series cartridges with 1μm,4.5μm,10μm,20μm,40μm,70μm,100μm grades, and optional H13, J, H1, EPDM, Viton seals. Please provide full part number for accurate quotation.
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