Pentair Aqualine ALN05‑60B for Ultrafiltration Pretreatment System
Pentair Aqualine ALN05‑60B acts as a core pretreatment component for industrial ultrafiltration equipment. This liquid filter delivers outstanding dirt‑holding capacity and reduces the frequency of routine cartridge replacements. Constructed with high‑strength pleated polypropylene medium, it fits standard large‑flow filter housings and can cooperate with High‑flow water filter cartridge and Water Filtration PP Pleated Filter to build complete multi‑stage water‑treatment workflows. It is widely adopted for process water purification projects in power, chemical and food‑beverage industries across global markets.
Product Introduction
Pentair Aqualine ALN05‑60B is a large‑diameter high‑flow pleated filter cartridge specially optimized for ultrafiltration front‑end protection. As a drop‑in interchange industrial filter element, it is installed upstream of ultrafiltration membrane modules. Its primary purpose is to capture suspended solids, colloids, fine sediment, pipeline rust and granular impurities inside raw water. By removing most particulate contaminants in advance, it effectively lowers UF membrane fouling risk, decreases chemical cleaning cycles and prolongs the service life of high‑cost ultrafiltration membrane components.
Compared with conventional small‑size filter cartridges, ALN05‑60B adopts large‑diameter pleated structural design, which greatly expands the effective filtration area of single filter element. Under the same operating flow condition, fewer cartridges need to be installed inside filter housing. For system integrators and end‑users, this brings practical advantages: fewer filter housings, simplified installation work and reduced long‑term operation‑maintenance expenditure. When designing a complete water‑treatment skid, users can match it with High Flow Pleated Filter Cartridge for Industrial UF System and Replace Pall Marksman High‑Flow Cartridge to realize multi‑grade gradient pre‑filtration interception effect.
The whole filter cartridge adopts full polypropylene material construction. Advanced thermal‑bond pleating technology replaces adhesive bonding, eliminating secondary pollution risk caused by glue dissolution under long‑term water flow scouring. End caps and inner‑outer support skeletons are integrally molded, maintaining stable structural performance under continuous high‑flow impact and frequent pressure fluctuation. Whether for newly‑built ultrafiltration water‑making equipment or spare‑part replacement of existing water‑treatment production lines, Pentair Aqualine ALN05‑60B can provide stable and consistent pretreatment filtering performance.

Working Principle
Pentair Aqualine ALN05‑60B adopts surface‑depth composite pleated filtration principle. After raw water enters filter housing, fluid flows radially inward from the outer surface of filter cartridge. Large solid particles are firstly trapped on outer pleated surface layer, while tiny fine impurities penetrate into polypropylene fiber gaps and get intercepted inside filter medium.
Thanks to large‑area pleated layout, pollutants are evenly distributed across the whole filter medium, rather than accumulating only on partial local surface. This structural feature slows down differential‑pressure rising speed, maximizes dirt‑holding capacity and extends the effective service cycle of filter cartridge. When pressure difference between equipment inlet and outlet reaches preset threshold value, it means filter medium is saturated with intercepted pollutants, and operators need to replace the whole cartridge.
It serves as the front‑line protective barrier for ultrafiltration equipment. Without this pretreatment protection, raw water carrying solid particles will flow directly onto UF membrane surface. Contaminants will deposit on membrane surface, block membrane pores, accelerate membrane fouling, increase chemical cleaning frequency, and even result in irreversible membrane damage. When cooperating with PFTM11UNF high flow filter cartridge for multi‑stage combined filtration, overall stability of water‑treatment system can be further improved. It should be noted that this filter element is only used for solid‑particle interception, cannot remove dissolved ions in water, so it only undertakes pretreatment work before ultrafiltration membrane.
Technical Parameters
| Item | Specification |
|---|
| Model | Pentair Aqualine ALN05‑60B |
| Filtration Rating | 5 μm nominal |
| Cartridge Length | 60 inch |
| Filter Media | Pleated Polypropylene (PP) |
| Support & End‑cap Material | Polypropylene |
| Outer Diameter | 152 mm |
| Inner Diameter | 63 mm |
| Single‑cartridge Rated Flow | 120‑140 m³/h |
| Maximum Operating Temperature | 65 ℃ |
| Maximum Working Pressure | 1.0 MPa |
| Recommended Replacement Differential Pressure | 0.35 MPa |
| Connection Style | Special Aqualine interface |
| Chemical Compatibility | Excellent adaptability for neutral water, weak acid and weak alkali aqueous solution |
Quality Control
Every batch of Pentair Aqualine ALN05‑60B will complete full‑process production inspection and finished‑product testing before delivery. Raw‑material incoming inspection is implemented for polypropylene filter cloth, support skeleton and end‑cap raw materials to guarantee raw‑material consistency. During production process, sampling inspection is carried out for pleating amplitude, thermal‑bond strength and end‑cap sealing performance.
Finished‑product testing covers bubble‑point integrity test, cyclic pressure impulse test and water‑flow pressure drop detection. Defective products with medium crack, poor sealing and structural looseness will be fully eliminated. Glue‑free thermal‑bond process avoids adhesive dissolution risk which would contaminate process water.
Products are manufactured in accordance with industrial filtration quality‑management specifications. Each filter cartridge is individually packed to prevent dust and particle contamination during storage and transportation. Complete technical datasheets are provided for engineering design reference. On‑site installation inspection is still required before putting into operation to confirm housing interface matching and sealing condition.

Application Fields
Pentair Aqualine ALN05‑60B is mainly used as pretreatment filter for ultrafiltration water‑treatment systems, and it is also widely deployed in multiple industrial liquid‑filtration scenarios.
Industrial ultrafiltration system pretreatment: Trap sediment, iron‑oxide scale and suspended particles, protect UF membrane elements, reduce membrane cleaning frequency, suitable for raw‑water purification and circulating‑water treatment projects.
Power plant water treatment: Boiler make‑up water and condensate pre‑filtration, remove pipeline rust particles and suspended pollutants.
Food & beverage industry: Raw‑water pretreatment for drinking‑water and beverage production, filter granular impurities.
Chemical industry: Production process‑water filtration and circulating cooling‑water pretreatment.
Municipal water‑supply & reclaimed‑water reuse: Large‑flow raw‑water pre‑filtration for municipal water‑works and water‑recycling projects.
Pharmaceutical and cosmetic water‑making: Sanitary‑grade process‑water pre‑filtration for water‑preparation equipment.
According to actual raw‑water turbidity and pollutant composition of different projects, users can set multi‑stage gradient filtration to achieve better overall filtering effect.
FAQ
Q1: What function does Pentair Aqualine ALN05‑60B perform in ultrafiltration equipment?
A: It acts as ultrafiltration pretreatment protective filter. It intercepts suspended solids, sediment and granular contaminants inside raw water, reduces pollutant load on ultrafiltration membranes, slows down membrane fouling, cuts chemical cleaning frequency and extends UF membrane service life.
Q2: What is the service life of Pentair Aqualine ALN05‑60B?
A: There is no fixed service‑life time standard. Service cycle is mainly determined by raw‑water turbidity, pollutant content and actual operating flow. Normally replace cartridge when inlet‑outlet differential pressure reaches 0.35 MPa.
Q3: Can Pentair Aqualine ALN05‑60B be cleaned and reused after contamination?
A: This is disposable pleated filter element. After filter‑medium gaps are filled with pollutants, backwashing cannot fully restore original filtering performance. Re‑use after cleaning will bring particle leakage risk, direct replacement is recommended.
Q4: What filter housing matches Pentair Aqualine ALN05‑60B?
A: It adapts to 60‑inch large‑flow filter housing with special Aqualine connection interface. Before purchase, please confirm housing interface dimension, inner‑chamber space and pressure‑bearing rating to avoid installation mismatch.
Q5: Can ALN05‑60B work under strong‑acid and strong‑alkali working conditions?
A: Polypropylene material has good tolerance for weak‑acid and weak‑alkali aqueous medium. It is not fit for long‑term operation under high‑concentration strong‑acid or strong‑alkali environment. Please consult technical support for evaluation for special chemical‑medium working conditions.
Q6: How many ALN05‑60B cartridges do I need for my ultrafiltration system?
A: Quantity calculation depends on system total flow rate, single‑cartridge allowable flow and raw‑water quality. It is suggested to calculate required quantity referring to technical datasheet, and properly reserve surplus for fluctuating‑water‑quality working scenarios.
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