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Liquid Fingertrap Magnet - Tube Design

 MPI’s Liquid Fingertrap Magnet Tube Design (LFT) — is designed to protect product

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Liquid Finger Trap Magnet
  1. Flowability and Strength Variations
    • Product is pumped through the magnet where ferrous tramp metal collects on either an array of 1” diameter magnetic tubes or a single 3” diameter magnetic tube. The tramp metal collects behind the tubes in the direction of product flow to prevent tramp metal wash off. Non-magnetic particles are separated by gravity and collect in the sump located in the bottom of the magnet enclosure.
  2. Diameter Ranges
    • Standard inlet / outlet sizes available from 1.5” diameter up to 12” diameter (HP model required for sizes over 4” diameter)
  3. Adaptable to Existing Lines
    • Easy installation into existing line using sanitary tri-clover, threaded or ANSI 150 pound inlet and outlet flanges
  4. Tube Configuration for Easy Cleaning
    • Exclusive tube configuration for easy removal of ferrous tramp metal from magnetic tubes
  5. Beauty Rings Protect Tubes from Impact
    • Welded tube support located on the bottom of the magnet element
      • Ensures proper magnetic protection by eliminating bending of the tubes inwards due to product flow or handling during cleaning
      • Increases magnet life by preventing broken welds on end of tubes caused by impact during cleaning
  • Detectable Gasket Material
    • Metal detectable magnet housing gasket standard (Buna material)
  • Maximum Pressure Levels
    • Designed for operating at up to 150 PSI maximum pressure (at 248°F) depending on model size
  • High-Temperature Rating
    • Designed for operating temperatures up to 356°F depending on model configurations
  • USDA Certified
    • USDA approved certified sanitary (USDA AMS NSF / ANSI / 3-A14159-1 2002) available

The tramp metal collects at the downstream side of the magnetic tubes, preventing tramp metal “wash-off” during the continuous product flow around and through the magnetic field without restricting the product flow. Additionally, non-magnetic particles are trapped, by gravity, in a sump beneath the magnetic element.

1″ Tube 3″ Tube
magnetic finger trap how it works 3 inch liquid finger trap

1″ Tube Design 3″ Tube Design
Liquid finger trap magnet 3 inch tube design Liquid finger trap magnet 1 inch tube design

US Customary Units

SIZE Fluid and Strained Product Fibrous and Crushed Product Viscous and Heavy Product
IN GALLONS/MINUTE GALLONS/MINUTE GALLONS/MINUTE
2 1-64 1-53 1.0-3.3
3 65-132 54-116 34-77
4 133-154 117-132 78-105
6 365-714 220-429 145-284

 

LFT Series Selection Guide

Model # Pipe Diameter (A) Unit Height (B) Unit Diameter (C) Total Width (D) Unit Weight # of
Magnetic Tubes
IN IN IN IN LBS
LFT-2 2 7 6.5 9 26 5
LFT-3 3 7 6.5 9 37 5
LFT-4 4 8 8.5 11 50 6
LFT-6 6 10.5 10.75 16.5 125 7

Metric Units

SIZE Fluid and Strained Product Fibrous and Crushed Product Viscous and Heavy Product
MM LITERS/SECOND LITERS/SECOND LITERS/SECOND
51 .06-4.0 .06-3.3 .06-2.1
76 4.1-8.3 3.4-7.3 2.1-4.9
102 8.4-9.7 4.7-8.3 4.9-6.6
125 23-45 14-27 9-18

 

LFT Series Selection Guide

Model # Pipe Diameter (A) Unit Height (B) Unit Diameter (C) Total Width (D) Unit Weight # of
Magnetic Tubes
MM MM MM MM KGS
LFT-2 51 178 165 229 12 5
LFT-3 76 178 165 229 17 5
LFT-4 102 203 216 279 32 6
LFT-6 152 267 273 419 57 7

  • Pipe Size: Available in diameters from 1” to 6” in any increment.
  • Maximum Operating Pressure:
    • 150 PSI at 248°F (120°C) (standard on sizes 4” and smaller)
    • 75 PSI at 248°F (120°C) (standard on sizes 5” and larger)
  • Cleaning Method:
    • Manual clean (standard)
    • Manual quick-clean with a sleeve over stripper for easy removal of tramp metal. Not recommended for sticky products. Sleeve over design reduces magnetic performance at contact.
  • Magnet Element: Four different styles are available depending on your application
    • Array of 1” diameter tubes designed for liquids, purees, and products with solids 1/2” and smaller
    • Single 3” diameter tube mounted in the center of housing designed for products with fragments, solids or chucks up to 1” in size
    • Plate magnet design with one or two plate magnets mounted on the outside of the product flow for very difficult flowing and fibrous products 
    • Combination magnet and screen design 
  • Material Construction:
    • 304 Stainless Steel (standard)
    • 316 Stainless Steel
  • Magnetic Tubes:
    • REN Rare Earth (standard)
    • Hi-G high-performance Rare Earth
    • TW Thin Wall high-performance Rare Earth
  • Magnetic Material Temperature:
    • 176°F (80°C) @ 52+ MGOe (rare earth) (standard)
    • 248°F (120°C) @ 48 MGO (rare earth)
    • 356°F (180°C) @ 38 MGO (rare earth)
    • 662°F (350°C) @ 30 MGO (rare earth)
  • Tube Coatings:
    • Stainless steel with no coating (standard)
    • Synergistic Coating [reference datasheet Synergistic Coating]
  • Gasket Material:
    • Buna material, color red, metal detectable, temperature range: -40°F (-40°C) to 225°F (107°C) (standard)
    • Viton material, color white, temperature range: -10°F (-23°C) to 400°F (204°C)
    • Customer specified
  • Inlet Flange Design:
    • Tri-Clover sanitary heavy-duty quick-release clamp (standard)
    • NPT threads (for use of spin on flanges)
    • ANSI 150 pound flange
    • Plain end for welded pipe installation
    • Customer specified
  • Outlet Flange Design:
    • Tri-Clover sanitary heavy-duty quick-release clamp (standard)
    • NPT threads (for use of spin on flanges)
    • ANSI 150 pound flange
    • Plain end for welded pipe installation
    • Customer specified
  • Water Jacket: For heating or cooling products
    • Not included (standard)
    • Included
  • Drain: Ball valve located on the bottom of the unit to drain before opening the magnet
    • Not included (standard)
    • Included
  • Lock Out Tab: Prevents unauthorized entry via customer supplied and an installed padlock
    • Not included (standard)
    • Included
  • USDA Magnet Certification:
    • Not included (standard)

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