HFU640UY700H13W is a core‑free wide‑diameter high flow pleated filter cartridge from Pall Ultipleat HFU series, widely applied for industrial raw water pre‑treatment and RO membrane upstream security filtration. Our compatible replacement HFU640UY700H13W strictly copies the original crescent pleat structure, single open‑end design, integrated lifting handle and H13 U‑cup sealing size, enabling direct plug‑and‑play fitting into standard Pall high flow filter housings with no modification required. Made of UY gradient polypropylene media, this substitute cartridge features stable high‑flow performance, reliable 70μm particle retention and superior dirt holding capacity. Numerous water‑treatment EPC projects adopt combined solutions of HFU620GF100H13 filter cartridge and HFU660UY020J filter element together with HFU640UY700H13W for multi‑stage water purification systems.
HFU640UY700H13W – Pall Ultipleat High Flow Pleated Filter Cartridge
HFU640UY700H13W is a core‑free wide‑diameter high flow pleated filter cartridge from Pall Ultipleat HFU series, widely applied for industrial raw water pre‑treatment and RO membrane upstream security filtration. Our compatible replacement HFU640UY700H13W strictly copies the original crescent pleat structure, single open‑end design, integrated lifting handle and H13 U‑cup sealing size, enabling direct plug‑and‑play fitting into standard Pall high flow filter housings with no modification required. Made of UY gradient polypropylene media, this substitute cartridge features stable high‑flow performance, reliable 70μm particle retention and superior dirt holding capacity. Numerous water‑treatment EPC projects adopt combined solutions of HFU620GF100H13 filter cartridge and HFU660UY020J filter element together with HFU640UY700H13W for multi‑stage water purification systems.
Product Overview
HFU640UY700H13W adopts the well‑known Ultipleat core‑free 6‑inch wide‑diameter pleated construction with inside‑out flow direction. Unique crescent pleats maximize available filtration area. This 40‑inch length high flow cartridge with 70μm nominal precision is commonly used for coarse pre‑filtration in seawater desalination, power plant water treatment, petrochemical process water and municipal water supply projects. Using this large‑diameter cartridge reduces total filter quantity and lowers overall capital cost for filter vessels. Nevertheless, original Pall HFU640UY700H13W suffers from high purchase cost and long import lead‑time, bringing budget pressure and schedule risks for end‑users and engineering contractors. Our factory produces fully interchangeable replacement cartridges which match original filtration performance with competitive price and shorter delivery time.
Core specifications of HFU640UY700H13W: 6 inch outer diameter, 40 inch nominal length, 70μm filtration rating, UY gradient polypropylene pleated media, H13 NBR U‑cup seal with W customized structure. End caps, support layers and outer protective cover are reinforced polypropylene. All parts are thermal‑fusion bonded without glue, effectively preventing fiber shedding and secondary fluid contamination. Max continuous operating temperature is 82°C, maximum allowable differential pressure reaches 3.4 bar, suitable for non‑stop 24/7 industrial operation.
Every batch of HFU640UY700H13W undergoes dimension inspection, bubble‑point efficiency test and pressure tightness check to ensure perfect interchangeability. It effectively captures suspended solids, pipeline rust, sediment and large colloidal contaminants, decreases RO membrane fouling risk and provides reliable protection for downstream membrane elements, water pumps and regulating valves.
Filtration Working Principle
HFU640UY700H13W works on mature inside‑out gradient filtration principle. Under system pressure, raw water flows into the inner cavity of core‑free cartridge and passes outward through multi‑layer gradient polypropylene pleated media. Large sediment and flocs are trapped by inner pleated layers, while fine particles and colloids which easily foul RO membranes are intercepted by outer media layers.
Optimized crescent pleats reduce fluid dead zones and avoid media compression under pressure, maximizing dirt holding volume. Contaminants are sealed inside the cartridge during replacement, preventing secondary particle leakage and clean‑line pollution. After filtration, treated water flows to subsequent processing units. Operators need to replace cartridges timely when inlet‑outlet differential pressure rises to 25‑35 PSID to restore rated flow capacity.
Core Competitive Advantages
Full Drop‑in Interchangeability:
Matches original outer dimension, end‑cap shape, lifting handle and H13 U‑cup sealing specification; no housing modification needed to cut on‑site maintenance time.
Reliable 70μm Nominal Filtration:
Gradient polypropylene depth media delivers stable impurity removal performance, ideal for raw water coarse pre‑filtration.
High Dirt Holding Capacity:
Expanded effective filtration area slows pressure‑rise rate and extends service life.
Wide Chemical Compatibility:
All‑PP material performs well in most aqueous industrial fluid conditions.
Cost & Lead‑time Benefit:
Factory direct supply removes middlemen, much shorter delivery cycle versus imported genuine HFU640UY700H13W.
Strict Batch Inspection:
Complete quality testing guarantees stable performance for large‑scale engineering orders.
Main Application Scenarios
Seawater and brackish water desalination RO pre‑security 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‑scale municipal water treatment projects
FAQ
Q1: Can replacement HFU640UY700H13W fit original Pall Ultipleat filter housings directly?
A1: Yes. All key dimensions and H13 U‑cup sealing structure follow original factory standards. Plug‑and‑play installation without extra accessories or housing adjustment.
Q2: What is the meaning for each code of HFU640UY700H13W?
A2: HFU = Ultipleat High Flow series; 640 = 6‑inch OD, 40‑inch length; UY = gradient polypropylene pleated media; 700 = 70 micron; H13 = NBR U‑cup seal; W = customized structural version.
Q3: When should we replace this high flow cartridge?
A3: Inlet‑outlet differential pressure is the key reference. Replace when differential pressure reaches 25‑35 PSID. Higher raw‑water turbidity requires shorter replacement interval.
Q4: Can HFU640UY700H13W be cleaned and reused by backwashing?
A4: It is disposable pleated filter consumable. Fine colloids and micro‑impurities penetrate into media pores. Normal backwash cannot restore original filtration efficiency, timely replacement is recommended.
Q5: Can you provide other micron ratings and seal types for HFU640 series?
A5: Yes. HFU640 series cartridges are available in 1μm,4.5μm,10μm,20μm,40μm,70μm,100μm, with optional H13, J, H1, EPDM, Viton seals. Please offer full part‑number for accurate quotation.
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