Product description
Absolute rated nylon melt blown depth filter cartridge for critical liquid filtration
The nylon melt blown depth filter cartridge – absolute is designed for critical filtration applications where consistent, absolute particle removal and high reliability are required. Manufactured using thermally bonded nylon fibres, this cartridge provides true depth filtration with a defined absolute micron rating.
The gradient density structure captures contaminants throughout the full depth of the media, delivering high dirt holding capacity, long service life and predictable filtration performance even under demanding process conditions.
This cartridge is suitable for applications where validated filtration efficiency, chemical compatibility and process security are essential.
Filtration principle
The cartridge is manufactured using a melt blown process that creates a gradient density structure, with finer fibres towards the core and coarser fibres on the outer layers.
Process liquid flows from the outside to the inside of the cartridge, allowing particles to be progressively captured throughout the depth of the media.
This filtration principle provides:
absolute rated particle retention
high contaminant loading capacity
stable pressure drop over service life
consistent and repeatable filtration efficiency
reliable performance under variable flow conditions
The absolute rating ensures defined particle removal at the stated micron level.
Absolute filtration performance
These nylon melt blown depth cartridges are designed to deliver absolute filtration performance, typically achieving high beta ratios at their rated micron size.
This makes them suitable for applications where precise, consistent and validated contaminant removal is required, rather than nominal or depth-only filtration.
Design and construction
The cartridge features a robust, one-piece construction using thermally bonded nylon fibres without adhesives or binders.
Key design characteristics include:
gradient density melt blown nylon media
thermally bonded construction for structural integrity
high porosity for improved flow rates
rigid inner core for mechanical strength
low fibre migration and extractables
The construction supports use in chemically aggressive and high temperature environments.
Materials of construction
Filter media:
Nylon (melt blown, gradient density)
Core and end caps:
Nylon or compatible polymer materials depending on configuration
Sealing options:
Elastomers selected according to process compatibility requirements
All materials are selected for chemical resistance, cleanliness and suitability for industrial and process filtration applications.
Operating conditions
Typical operating conditions include:
absolute micron ratings across a wide filtration range
high temperature resistance suitable for hot liquid processes
high allowable differential pressure depending on temperature
compatibility with aggressive chemicals and solvents
Exact pressure and temperature limits depend on micron rating, cartridge length and operating conditions and are defined during configuration.
Key benefits
Absolute rated filtration performance
High dirt holding capacity and long service life
Stable pressure drop characteristics
Excellent chemical and temperature resistance
Low extractables and fibre release
Suitable for critical and validated processes
Typical applications
These cartridges are commonly used in:
pharmaceutical and biotechnology processes
fine chemical filtration
electronics and semiconductor manufacturing
food and beverage process filtration
water for injection and process water systems
coatings, inks and specialty chemicals
Configuration options
Available configuration options include:
absolute micron ratings across a wide range
multiple cartridge lengths
double open end and single open end configurations
222 and 226 O-ring connections with or without fin
various sealing material options
This flexibility allows the cartridge to be matched precisely to housing design and process requirements.
Compliance and quality
Nylon melt blown absolute cartridges are manufactured under controlled conditions to ensure consistent quality and traceability. Where required, documentation can be supplied to support validation, material compliance and filtration performance.