MPI Magnetic FIlters

Product Line Overview

Magnetic filters use rare-earth or high-strength permanent magnets to capture ferrous and paramagnetic particles from fluids (coolants, oils, hydraulic fluids), protecting downstream systems, reducing wear, and extending fluid life. (MPI’s Eco-Mag is a good example of this technology) cdn.thomasnet.com

Unlike traditional filters, magnetic filters often require no consumables—just periodic cleaning of the magnetic core.

Key Features & Benefits

• Permanent magnet core (rare-earth)
  • Holds ferrous particles effectively without power consumption
• No consumables / cartridges
  • Lower operating cost; reduced waste disposal
• Low or zero pressure drop
  • Minimal impact on fluid flow, even when loaded
• Easy cleaning / maintenance
  • Magnetic core can be cleaned quickly (e.g., with a core cleaning tool)
• Long fluid life & cleaner systems
  • Less contamination, less wear on pumps and valves, better fluid quality over time
• Broad application compatibility
  • Works with coolants, oil, hydraulic fluids, etc.

Typical Specifications & Models

Below are sample specs for MPI / MPI magnetic / return filter systems (note: may vary by model):

Usage & Maintenance Tips

• For heavy contamination or mixed particles (non-ferrous), combine magnetic filters with standard filtration (mesh, media filters).
• Place the filter in a location where fluid must pass through (return line or side-stream) so all fluid is subject to magnetic cleaning.
• Clean the magnetic core regularly before saturation—do not wait for full saturation.
• Monitor for any drop in performance (flow restriction) or increased Δp.
• Inspect fluid clarity and wear debris levels to judge filter effectiveness.

Ordering Considerations & Options

• Model / Size – Match the magnetic filter to your maximum fluid flow / system flow.
• Bypass Valve Setting – Choose appropriate opening pressure depending on system design.
• Seal Material Compatibility – For fluids beyond standard oils/coolants, opt for FPM / Viton instead of NBR.
• Housing Material – For corrosion or aggressive environments, aluminum or other robust materials preferred.
• Magnetic Core Strength / Type – Higher strength magnets capture smaller particles; may be offered in different grades.
• Cleaning Method / Tooling – Provide proper core cleaning tool or mechanism.
• Mounting / Orientation – Confirm how and where the unit will be installed (vertical, horizontal, in-tank, external).
• Optional Accessories – Pressure gauges, differential pressure sensors, easy-access bowls, vacuum-sealed closures, etc.