Self cleaning filters are available in either manual or automatic versions with standard design options for either low pressure (14 BARG) or high pressure (35 BARG) system.
In operation the liquid enters the body and flows through the element from outside to inside.
Debris is collected on the outside of the wedge wire element, which is cleaned without flow interruption by rotating the cylindrical element against twin scraper blades.
The debris accumulated during element rotation is deposited into the bottom of the filter body from where it is periodically discharged, manually or automatically.
The element is manufactured from a perforated sheet with a mesh liner or from a single piece wedge wire. They clean automatically without interrupting the liquid flow using the pressure within the system.
Spring loaded heads rotate around the inside of the basket. Heads are connected to a hollow central backwash shaft with backwash valve. The backwash valve, once open to the atmosphere, creates a reversal of flow across the filter element.
Collected contaminant is flushed from the inside of the element, out through the backwash pipework. The cleaning cycle is initiated by an adjustable timer and overridden by high differential pressure.