Sanitary pressure pipeline magnets developed by MAGNATTACK™ Global

Supplier: Magnattack Global
21 May, 2014

Solving pressure distortion and leakage for liquid manufacturers with new sanitary pipeline magnets to suit 1"-4" pipe sizes.

Sanitary pressure pipeline magnets developed by MAGNATTACK™ Global are set to supersede older style liquid traps and finger magnets.

The liquid, dairy, soups, sauces and marinate industries will now be able to avoid major problems by utilising recent technology in liquid line magnets. The new sanitary development by MAGNATTACK™ Global reduces product reject, reduces risk of product recall and brand name damage and eliminates leakage of magnets handling pressurised liquids - particularly those that are hot or contain particulate.

Higher magnet strength is maintained for longer thanks to the technology of resinising under vacuum.

3 major problems with pipeline magnets have plagued a major sauce manufacturer and a prominent soup manufacturer:

1) Leaking gaskets and pressure distorting of plate type magnets in a pipe adapted housing. Bolted flanges had to be undone to clean the magnets.
2) Swelling of magnet elements and loss of magnetic strength due to heat and corrosion. Liquid or oxygen finding access to the magnet elements meant the possibility of cross contamination or biological contaminant seepage into the product.
3) Catch and lose situation - magnetics were not being retained on the magnet but swept off by the product flow - consequently the magnets hardly ever needed cleaning.

In this case conventional ferrous traps or pot magnets were not required due to the product having large particulate and to the difficulty of cleaning at least 5 fingers.

The problems stated above were tackled seriously by WJB Engineering, (now MAGNATTACK™ Global) and resulted in a carefully considered design based on "all circular" element principles. This fixed the pressure distortion and leakage problems 100%.

The diameter and design of the magnet elements ensured retention of magnetics attracted to the magnet. Even if the particles in a horizontal pipeline were travelling along the bottom of the pipe (by gravity), they scored a direct hit on one of the 10,000 gauss pole bands and were effectively retained on the downstream portion of the magnet.

In 3" pipelines, the magnet element was 2.5" diameter, affording a much greater bulk of magnetic energy compared to 1" pot magnet fingers.

The companies concerned were impressed, but before accepting the new departure in design insisted on product trials with known seeded amounts of magnetic and weakly magnetic stainless steel fragments.

Following independent assessments, the separation efficiency results were a significant improvement and both companies have now adopted MAGNATTACK™ Globals’ Pressure Pipeline Magnet solution throughout their plants.

It is therefore no longer unreasonable to use the following check list when adding or replacing liquid line magnets:

Is the desired unit:

  • Pressure tested to twice the operating pressure?
  • iCertified >10,000 gauss on supply, including the base of the magnet to catch fragments by gravity flowing along the bottom of the pipe?
  • Have a minimum number of magnet elements to clean?
  • Double sealed magnet element with vacuum resinising for lengthened strength life?
  • All 316 stainless steel construction?
  • Magnet equivalent to RE80™HT 302F rated?
  • Accessible / magnet entry via triclover?
  • Provided with inlet / outlets as required?
  • Surface roughness, magnet strength, etc endorsed by HACCP International to current standards?
  • CIP cleanable?
  • Provided with a push tool magnet cleaner (on larger installations using multi finger magnet probes)?