The Magnetic Particle Separator Filter 1'' Sentinel Eliminator Vortex 500 is an essential accessory for the proper operation of your heating system. Manufactured by Vortex, it effectively removes oxides from the water, ensuring proper circulation within the boiler. As with all systems that use water to transfer thermal load, over time, circulation can be affected by corrosion of the system's metal components. The black iron oxides that form can cause clogging, which this filter prevents, thereby extending the lifespan of the system and improving its efficiency.