Water flows into the valve at the top, down through the media and then up through the ‘riser’ tube in the middle of the vessel. As the water travels through the media the iron and manganese are oxidised bringing the metals out of solution and trapping them so only clean clear water flows out to service. These systems also act as sediment filters trapping any natural turbidity. As the media act as a catalyst they do not need to be topped up or replaced on a regular basis.

Filox filters require dissolved oxygen in the water to oxidise the metals. This normally is present naturally but can be added by aerator or as an air filtration option.

All catalytic iron & manganese removal systems rely on there being enough oxygen to be present. The air draw kit is an option which can be fitted on clack valve systems which forms an air pocket above the media so as the water cascades through it oxygen is adsorbed into the water