HFU620UY400JU High Flow Water Filter – Pall Ultipleat Core‑Free Pleated Filter Cartridge

HFU620UY400JU High Flow Water Filter – Pall Ultipleat Core‑Free Pleated Filter Cartridge

HFU620UY400JU High Flow Water Filter belongs to Pall Ultipleat HFU core‑free wide‑diameter high flow filter series, widely deployed in industrial raw water pretreatment and RO membrane front‑end security filtration projects. Our interchangeable aftermarket HFU620UY400JU fully replicates original crescent pleat layout, single open‑end construction, integrated lifting handle and JU ethylene‑propylene U‑cup sealing dimensions, supporting direct plug‑and‑play installation inside standard Pall high flow filter housings without equipment modification. Constructed with UY gradient polypropylene pleated media, this replacement cartridge delivers stable high‑flow capacity, reliable 40μm particle retention and outstanding dirt‑holding performance. Many water‑treatment EPC partners combine HFU640GF200H13 filter cartridge and HFU640UY100J filter element with HFU620UY400JU alternatives to establish integrated multi‑stage water purification systems.

Product Overview

HFU620UY400JU High Flow Water Filter adopts classic Ultipleat core‑free 6‑inch wide‑diameter pleated design with inside‑out flow direction. Optimized crescent pleat structure maximizes effective filtration surface area. As a 20‑inch long high‑flow cartridge with 40μm nominal filtration rating, it is commonly deployed in seawater desalination, power plant water treatment, petrochemical circulating water and municipal water supply projects. Adopting this short‑length large‑diameter cartridge helps reduce total filter quantity and lower overall investment for filter vessels. However, high procurement cost and long import lead‑times of genuine Pall HFU620UY400JU bring budget pressure and project‑delay risks for plant operators and engineering contractors. Our factory manufactures fully interchangeable replacement cartridges to achieve equivalent filtration indicators with competitive pricing and shorter delivery cycle.

Core specifications of HFU620UY400JU: 6 inch outer diameter, 20 inch nominal length, 40μm filtration rating, UY gradient polypropylene pleated media, JU EPDM U‑cup seal. End caps, drainage support layers and outer protective wrap are reinforced polypropylene materials. All components adopt thermal‑fusion molding without adhesive bonding, 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 HFU620UY400JU cartridges undergoes dimensional tolerance inspection, bubble‑point efficiency testing and pressure‑tightness verification to guarantee seamless interchangeability. It efficiently intercepts suspended solids, pipeline rust, sediment and coarse colloids, alleviating RO membrane fouling risks and offering reliable protection for downstream membrane modules, water pumps and precision regulating valves.

Filtration Working Principle

HFU620UY400JU High Flow Water Filter follows mature inside‑out gradient filtration flow path. Driven by system operating pressure, raw water enters the inner cavity of the coreless filter cartridge and permeates outward through multi‑layer gradient polypropylene pleated media. Coarse sediment and large flocs are trapped on inner pleated layers, while fine particles and colloids that easily cause membrane clogging are deeply intercepted by outer precision media layers.

Optimized crescent pleat arrangement minimizes fluid dead zones and prevents media compression under pressure, maximizing dirt‑holding capacity. Pollutants remain enclosed inside the cartridge during replacement, avoiding secondary particle leakage and contamination of clean‑water pipelines. After purification, treated water flows into subsequent separation processes. Operators should replace cartridges promptly once inlet‑outlet differential pressure rises to 25‑35 PSID to restore system rated‑flow performance.

Core Competitive Advantages

Full Drop‑in Interchangeability: Consistent with original outer dimensions, end‑cap geometry, lifting handle and JU EPDM U‑cup sealing standards; no housing modification required to cut maintenance downtime.

Stable 40μm Filtration Grade: Gradient polypropylene depth media delivers steady impurity‑interception performance, perfectly suited for raw‑water coarse pre‑filtration.

Large Dirt‑Holding Capacity: Scientific crescent‑pleat layout expands filtration area, slows differential‑pressure growth and extends service intervals.

Broad Chemical Compatibility: All‑polypropylene construction provides good compatibility for most aqueous industrial fluids.

Cost & Supply Advantage: Direct factory supply removes intermediate links and achieves shorter lead‑times compared with imported genuine HFU620UY400JU cartridges.

Strict Batch Quality Control: Complete 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‑scale municipal water treatment projects

FAQ (5 Items)

Q1: Can aftermarket HFU620UY400JU be directly installed into original Pall Ultipleat filter housings?

A: Yes. All critical dimensions and JU EPDM U‑cup sealing structure comply with original design standards. Plug‑and‑play installation is supported without extra accessories or vessel adjustments.

Q2: What does each segment of model HFU620UY400JU stand for?

A: HFU = Ultipleat High Flow series; 620 = 6 inch OD, 20 inch length; UY = gradient polypropylene pleated media; 400 = 40 micron rating; JU = EPDM U‑cup sealing configurationPall Corpo....

Q3: What differential pressure triggers filter replacement?

A: The inlet‑outlet differential pressure serves as the core judging indicator. When pressure difference reaches 25‑35 PSID, filter media is heavily clogged. Systems with high influent turbidity require shorter replacement cycles.

Q4: Can HFU620UY400JU filter cartridge be backwashed and reused?

A: It belongs to disposable pleated filter consumables. Fine colloids and micro‑particles embed deep into media pores. Conventional backwashing cannot fully recover initial filtration efficiency, so timely replacement is advised.

Q5: Are alternative micron ratings and seal styles available for HFU620 UY series?

A: Yes. We supply HFU620‑series UY media cartridges with 1μm,4.5μm,10μm,20μm,40μm,70μm ratings, and optional J, JU, H13, EPDM, Viton seals. Please provide exact part number for precise quotation.

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