Full Flow Replacement Water Filter Cartridge for Ultrafiltration Pretreatment

1. Product Introduction of Full Flow Replacement Water Filter

Full flow replacement water filter refers to the removable pleated‑type high‑flow filter cartridge, the core security‑filtration consumable inside ultrafiltration pretreatment filter housings. Raw water sourced from underground wells, surface reservoirs and factory recycled wastewater carries silt, rust particles, fine fibers and organic colloidal particles. Without the blocking‑out function from the full‑flow replacement filter, fine‑grained pollutants will scratch, jam and pollute ultrafiltration‑membrane holes, triggering irreversible membrane fouling, shortening membrane service life and raising the frequency of chemical cleaning work for ultrafiltration devices. Hence, the replaceable full‑flow water filter cartridge has turned into a standard spare component for modern‑day industrial ultrafiltration projects.

Raw‑water firstly eliminates coarse sediment and rigid large‑size particulate contaminants by means of the upstream liquid filter. After coarse filtration, water flows into the stainless‑steel filter housing and gets fine‑processed by our full‑flow replacement filter cartridge. We supply multiple interchangeable filter elements for diverse ultrafiltration operating environments:

• For conventional ultrafiltration security filtration: Pleated Security Filter Element for Industrial Ultrafiltration

• For thermal‑power‑plant condensed‑water ultrafiltration projects: Condensed Water Filter Element for Industrial Ultrafiltration

• For seawater‑desalination ultrafiltration pretreatment: Dow Membrane Filters Type SW30HRLE‑400 High‑Flow Cartridge

• For heavy‑load industrial‑water ultrafiltration stations: Cartridge Filter Element for High‑Flow Applications in Ultrafiltration

This full‑flow replacement‑style water filter cartridge is assembled with multi‑layer folded filter medium, rigid inner supporting skeleton, injection‑molded upper‑and‑lower end‑caps and elastic sealing rings. Available filter materials cover polypropylene, glass fiber and PTFE. The smooth full‑flow channel design cuts internal water‑flow resistance and improves single‑cartridge water throughput. It supports mainstream 226‑fin bayonet connection and flat‑end cap installation, compatible with most international standard high‑flow filter housings. Every finished‑product filter cartridge will complete bubble‑point inspection and hydraulic‑pressure leakage testing before shipment, ensuring steady‑run coordination with ultrafiltration‑membrane equipment. Our factory provides bulk spot‑goods supply and personalized customization service for non‑standard ultrafiltration‑system requirements.

2. Working Principle: Collaborative Filtration With Ultrafiltration Equipment

The complete water‑purification workflow adopts three‑stage progressive filtration: liquid filter coarse filtration → full‑flow replacement water filter fine filtration → ultrafiltration‑membrane deep separation. The folded filter‑medium traps suspended particles via physical interception, inertial deposition and surface adsorption.

2.1 Long‑Duration Stable Filtration Operation

After coarse screening by the front‑end liquid filter, raw‑water flows into the filter housing and permeates inward from the outer pleated layer to the central water‑collecting pipeline. Large‑size impurities stay trapped on the cartridge outer‑surface, and tiny colloids and organic particles are intercepted inside folded filter layers. Purified water gathers in the central pipeline and flows steadily into ultrafiltration equipment to remove bacteria, macromolecular organics and ultra‑fine suspended pollutants. The full‑flow channel structure greatly reduces water‑flow obstruction, maintaining low‑stable pressure‑drop under long‑time high‑speed water passing and preventing water‑supply shortage for continuous ultrafiltration water‑making.

2.2 Differential‑Pressure Reminder for Cartridge Replacement

Pollutants will pile up gradually on folded filter‑media in continuous operation and lift inlet‑outlet pressure‑difference. When the pressure‑difference reaches the 0.25 MPa warning threshold, staff need to replace the full‑flow replacement water filter right away. Blocked filter cartridges will increase water‑pump working‑load, reduce ultrafiltration water‑yield and accelerate membrane fouling.

2.3 Cooperation With Ultrafiltration Back‑Washing System

Water treated by the full‑flow replacement filter cartridge can serve as the back‑wash water‑source for ultrafiltration membrane modules. When blended with compressed air, it forms gas‑water mixed cleaning‑medium to flush contaminants stuck on ultrafiltration‑membrane surfaces, slow‑down membrane contamination and prolong the chemical‑cleaning cycle of ultrafiltration‑machinery.

3. Standard Technical Parameters

Dimension and Flow‑rate Specifications

• Outer diameter: 152 mm

• Optional cartridge length: 20‑inch, 40‑inch, 60‑inch

• Single‑cartridge rated flow: 65‑120 m³/h

• Filtration precision choices: 1 μm, 3 μm, 5 μm, 10 μm, 20 μm, 50 μm

• Connection mode: 226 fin‑type bayonet, flat open‑end cap

Filter‑Material Performance Index

• Polypropylene medium: Max working temperature ≤60℃, pH tolerance 1‑13, cost‑efficient

• Glass‑fiber medium: Outstanding dirt‑holding capacity, max working‑temperature ≤80℃

• PTFE medium: Strong acid‑alkali resistance, fit for corrosive industrial wastewater

• Standard sealing ring: EPDM; optional silicone rubber and fluororubber

Operating‑Limit Parameter

• Maximum working pressure: 1.0 MPa

• Recommended replacement differential‑pressure: 0.25 MPa

• Initial system pressure drop: ≤0.02 MPa

Matching Accessories

Front‑end industrial liquid filter, stainless‑steel filter housing, differential‑pressure gauge and pipeline mounting brackets

4. Strict Product‑Quality Assurance System

We are a professional manufacturer of full‑flow replacement high‑flow filter cartridges and complete ultrafiltration pretreatment schemes. All manufacturing‑work complies with ISO9001 international quality‑management standards. For overseas export‑orders, we are capable of supplying material inspection certificates and batch‑test reports to meet international‑project acceptance criteria.

1. Raw‑material inspection: Filter fabric, inner support‑skeleton and sealing‑rings are sampled for tensile‑strength and chemical‑resistance testing.

2. On‑line production inspection: QC‑workers check the folding uniformity, end‑cap bonding strength and sealing property for every cartridge.

3. Finished‑product inspection: 100 % air‑tightness and bubble‑point testing for each production batch.

4. Packing and shipment: Independent damp‑proof wrapping and shock‑resistant export cartons. Standard‑specification cartridges are ready for shipment within 3‑7 working‑days, and customized‑order delivery‑time ranges 12‑20 working‑days.

Under clean raw‑water operating‑conditions, the normal usable‑life of the full‑flow replacement water filter lasts 1‑3 months. Our engineering‑team provides long‑term free filter‑selection guidance and remote‑operation troubleshooting for clients owning ultrafiltration water‑treatment stations.

5. Main Application Fields Matched With Ultrafiltration Equipment

1. Ultrapure‑water manufacturing: Pretreatment security‑filtration for ultrafiltration‑RO combined water‑production systems

2. Seawater‑desalination engineering: Raw‑water protective filter cartridge for brackish‑water and seawater ultrafiltration‑plants

3. Petrochemical‑wastewater disposal: Fine pretreatment before tubular‑ultrafiltration wastewater processing

4. Municipal reclaimed‑water recycling: Supporting full‑flow cartridges for large‑scale centralized ultrafiltration‑stations

5. Thermal‑power‑plant industry: Condensate‑water filtration matched with condensed‑water ultrafiltration‑equipment

6. Food‑and‑beverage sector: Process‑water pretreatment for food‑grade ultrafiltration‑purification machinery

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