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Polypropylene Depth Filter Element


The CARDEV SDFC-P is a depth filter element made of chemically inert wound polypropylene fibre. The cartridge can be used on all water based mineral, semi-synthetic and synthetic Coolants/Lubricants such as metal working fluids.

Benefits include:

  • Removes microparticles
  • Removes tramp oil from coolants
  • Inhibits and prevents bacterial growth
  • Reduces maintenance on machines and tools
  • Extends lifespan of water based mineral, semi-synthetic and synthetic Coolants/Lubricants
  • Reduces incidence of oil mist

For more information call us on
01423 522911

Before And After Using CARDEV Oil Filtration

Water Removed

Removes free and dissolved water down to <50ppm (0.005%).

Without CARDEV Filtration

Not monitoring your oil is more damaging than you think.

With CARDEV Filtration

Within 1 week of installing a CARDEV Filtration system, you will notice a significant improvement with your machine.

Filtration Results

Particles Removed

100 times magnified, 1 scale mark = 10μm. Oil cleanliness is maintained at better than new levels. (Down to 13/11/8 (ISO 4406: 1999) – Class 2 NAS 1638).

Before using CARDEV Filtration

After using CARDEV Filtration

Download the SDFC-P brochure.

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    Frequently Asked Oil Filtration Questions

    What is contamination?

    Contamination can be broken down into three basic forms – Particulate, Water and Air.

    Particulate is generally classified as ‘Silt’ or ‘Chip’. Silt is defined as an accumulation over time of particulates measuring less than 5 microns. The effect of Silt contamination is a slow degradation of system component performance and failure. Chips (measuring more than 5 microns) have a more dramatic effect and can cause immediate, catastrophic, unplanned and costly failures.

    Where does contamination come from?

    There are many areas where contamination can gain access into a hydraulic system, starting from as early as the build process. These include dust, welding slag, rubber from hydraulic hoses/seals, sand from castings, poor cleaning of components, and metal debris from machined components.

    Open reservoir filling points, leaking heat exchangers, poor-performing or non-existing reservoir breathers, lack of proper filtration methods and worn cylinder seals are just some of the additional areas contaminants can enter during operation.

    Another major source of contamination introduction simply happens when fresh, new, but dirty, contaminated oils are introduced. This can even happen during system top-ups.

    How are contamination levels measured?

    The following chart (ISO And NAS Cleanliness Codes) details the ISO code, relevant particle amounts and the type of application and its sensitivity level. More sensitive applications require cleaner oil to ensure reliability.

    Can I trial CARDEV Filtration?

    Absolutely. To avoid wasting anyone’s valuable time, however, we like the trial to be towards the end of the consultation process, to provide proof of concept. This means we will have gone through pricing with you, and we will have established criteria for a successful trial.

    Why buy more oil when you can recycle the oil you have using CARDEV Filtration

    Contact us now for pricing.

    Tell me more about CARDEV Filtration

    Need help

    Call one of our Filtration specialists now.
    Call 01423 511 911.

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