The Flow line Magnets system is placed in a frame which fits to the header box or flow line (or both). This provides a complete magnetic barrier across the full width and depth of the fluid path.
The Flow line Magnet is pulled one section at a time rather than the whole frame having to be lifted. When the magnetic material is pulled above the stopper plate any metal will be discharged from the Flow line.
For more informations:
http://www.jws.no/products/flowline-magnets/