Polypropylene Pleated Filter Cartridge – Absolute

Product description

Absolute rated polypropylene pleated filter cartridge for high performance liquid filtration

The polypropylene pleated filter cartridge – absolute is designed for applications requiring reliable, absolute rated particulate removal combined with high dirt holding capacity and excellent chemical compatibility. Manufactured entirely from polypropylene, this cartridge provides consistent filtration performance across a wide range of process liquids.

The pleated depth construction allows coarse particles to be captured in the outer layers, while finer particulates are retained within the inner filtration layers, delivering long service life and stable pressure behaviour.

Filtration principle

The cartridge utilises a multi-layer pleated depth filtration design, with up to eight individual polypropylene filtration layers. Process liquid flows through the pleated structure, where contaminants are progressively captured from coarse to fine within the depth of the media.

This filtration principle provides:

• absolute rated particle retention

• high dirt holding capacity

• stable flow rates with low pressure drop

• consistent filtration efficiency over service life

The pleated configuration maximises effective filtration area while maintaining compact cartridge dimensions.

Media technology and uniqueness

The filter media is manufactured from pure polypropylene without the use of adhesives, binders or surfactants. Multiple filtration layers enable combined pre-filtration and fine filtration within a single cartridge.

Key media characteristics include:

• multi-layer polypropylene pleated depth media

• absolute rated filtration (Beta 5000)

• progressive particle retention through depth

• excellent chemical compatibility across wide pH range

This design allows a single cartridge to perform both coarse and fine filtration duties.

Design and construction

The cartridge features an all-polypropylene construction, including media, support layers, core, cage and end fittings. Thermal welding is used throughout the assembly process, eliminating the risk of media migration or extractables associated with adhesives.

Typical design features include:

• pleated depth filtration media

• all-polypropylene construction

• thermally welded assembly

• robust internal support structure

The design ensures mechanical strength and dimensional stability under varying flow and pressure conditions.

Materials of construction

Standard construction materials include:

• Filter media: Polypropylene

• Support media: Polypropylene

• Drainage layer: Polypropylene

• Inner core: Polypropylene

• Outer support: Polypropylene

• End fittings: Polypropylene

Sealing materials are selected according to application and compatibility requirements.

Available micron ratings

Typical absolute micron ratings include:

• 0.45 µm

• 0.5 µm

• 0.65 µm

• 1 µm

• 3 µm

• 5 µm

• 10 µm

• 25 µm

• 40 µm

• 50 µm

• 100 µm

All ratings are absolute at 99.98% efficiency (Beta 5000).

Operating conditions

Typical operating conditions include:

• Maximum operating temperature: 80 °C (continuous)

• Maximum differential pressure (forward flow):

  • 4.0 bar at 20 °C

  • 2.0 bar at 80 °C

• Maximum differential pressure (reverse flow):

  • 2.1 bar at 20 °C

  • 1.0 bar at 80 °C

Exact limits depend on cartridge configuration and operating conditions.

Compliance and safety

The polypropylene pleated filter cartridge is manufactured from materials compliant with EC Directive 1935/2004 and related regulations for food contact applications. Independent testing confirms suitability for use in regulated process environments

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Key benefits

• Absolute rated filtration performance

• High dirt holding capacity

• All-polypropylene construction

• No adhesives, binders or surfactants

• Excellent chemical compatibility

• Suitable for food, pharmaceutical and industrial processes

Typical applications

Polypropylene pleated filter cartridges – absolute are commonly used in:

• food and beverage processing

• beer and wine clarification

• pharmaceutical pre-filtration

• fine chemicals

• solvents

• pure water systems

• reverse osmosis protection

• acids and bases

Configuration and quotation

Polypropylene pleated filter cartridges are supplied on a configuration basis. Selection parameters include:

• micron rating

• cartridge length

• end cap / connection type

• sealing material

This ensures optimal matching to process and housing requirements.