It operates on edge filtration principle and no replacement of element is required.
It is of 2 types :- Manual and Automatic. In manual type a handle is fitted on the top which have to be manually rotated to clean the element.
In automatic type rotating is done by motor itself to clean the element.
The outher casing is made of fabrication or casting to withstand high pressure. The elements are made of metal plates hence no replacement of element is required.
It is suitable for any type of viscous liquid (Lube Oi, Hydraulic Oil, Other petroleum oil, coolant fluid, water / oil emulsion) etc.