Irrigation Filters
Irrigation water can contain a variety of contaminants from silt and sand to algae and other decaying organic matter.
Not all contaminants can be removed but with the correct filter the water can usually be cleaned enough for effective irrigation.
The level of filtration required is dependant on the type of irrigation system. Drip irrigation will need much finer filtration than spray irrigation to prevent blockages.
Most filters are available as manual or automatic. Manual filters require regular inspection and cleaning to keep them clean. Some manual filters are fitted with a brush or scanner assembly which allows them to be cleaned without disassembling. While this is a time saver it still requires regular checking.
Automatic filters are fitted with a timer and/or a pressure differential (PD) switch. When the pressure differential across the screen reaches a pre-set value the filter goes into a backflush cycle and cleans itself. This type of filter is essential for automatic irrigation systems.