How do hydraulic oil purification systems work?

Hydraulic oil purification systems remove contaminants like water, dirt, and air from hydraulic oil to maintain its performance. The oil is first passed through filters to eliminate solid particles. It is then heated and subjected to vacuum dehydration, which removes dissolved water and air by reducing their boiling points. Some systems also use centrifuges to separate contaminants based on their density. After purification, the oil is recirculated back into the hydraulic system, ensuring optimal lubrication, cooling, and power transmission.