Tube Magnets

MPI magnetic tubes are proudly made in the USA and are commonly used to remove small to medium size ferrous tramp metal contaminants from a variety of product streams. Typical uses for a magnetic tubes include removing ferrous metal from dry or liquid products commonly caused by metal on metal wear or other product contamination. Magnetic tubes protect process equipment and help ensure a high quality metal free product. All tube ends are provided with1/4”-20 tapped holes and are fully welded for the highest durability, no crimped or mechanically sealed end plugs.

  • Heavy wall thickness tube for high durability, higher performance thin tubes available and summarized in the table below
  • Multiple designs to fit every budget and performance requirement
  • Exclusive coatings available for nonstick and abrasive applications
  • Made in the USA
  • Industry-leading lead time for delivery — as short as 24 hours for custom sizes and configurations

Download Datasheet


How Tube Magnets Work:

The product stream flows around one or more 1” diameter tube magnets located within the product streams that are attached to their housing via the tapped end holes. As tramp metal contaminants are captured, they move to the underside of the tubes eliminating tramp metal “wash-off”. Magnet tubes are easy to install and clean. They offer an efficient and economical ferrous metal filtration protection of your processing equipment. The magnet tubes may be used as individual units or part of multiple row arrangements.

Tube Magnet Options:

Tube Diameter:

  • 1″ diameter (standard)
  • 3″ diameter (available for self-clean and quick clean only)

Tube Length:

  • Available lengths from 4″ to 36″ in any increment. For sizes over 36″, MPI reviews per application to ensure that product will meet life expectancy requirements.

Material Construction:

  • 304 Stainless Steel (standard)
  • 316 Stainless Steel

Magnetic Tubes:

  • Ceramic
  • REN Rare Earth (standard)
  • Hi-G high-performance Rare Earth
  • TW Thin Wall high-performance Rare Earth

Magnetic Material Temperature:

  • 400°F @ 3.5 MGO (ceramic)
  • 176°F @ 52-55 MGOe (rare earth) (standard)
  • 248°F @ 48 MGO (rare earth)
  • 356°F @ 38 MGO (rare earth)
  • 662°F @ 30 MGO (rare earth)

Tube Coatings:

  • Stainless steel with no coating (standard)
  • Synergistic Coating [reference datasheet Synergistic Coating]

Washdown/Liquid Tight Design:

  • Non-washdown for dry applications (standard)
  • Washdown design with liquid-tight tube for liquid or washdown applications

MPI can manufacture your tube with any end plug required for easy installation into your application.

Tube end design (end 1):

  • ¼-20 tapped (standard)
  • 3/8-20 tapped
  • Plain end
  • Bullet nose end
  • Bullet nose end ¼-20 tapped
  • Customer specified

Tube end design (end 2):

  • ¼-20 tapped (standard)
  • 3/8-20 tapped
  • Plain end
  • Bullet nose end
  • Bullet nose end ¼-20 tapped
  • Customer specified

MPI can manufacture your tubes with dead space on one or both ends to make metal removal easier. Note that there will be no magnetic protection in the dead space area and therefore should be located outside of the product flow area.

Dead space length:

  • No dead space, full magnetic tube (standard)
  • 2” dead space (slightly magnetic at end of the tube)
  • 4” dead space (no residual magnetism at end of the tube)

Dead space location:

  • Not applicable
  • End 1
  • End 2
  • Both ends