🔍 Key Concepts

• Centrifugal purifier flow path: how dirty oil enters and how clean oil and water leave • Relative positions of light phase (oil) and heavy phase (water) in the bowl during operation • Function and location of sealing water in an automatic self-cleaning purifier

💭 Think About

• Trace where the dirty oil would first enter this machine and how it would move upward and outward under centrifugal force • Look at the vertical level of port B relative to the water and oil layers shown in the bowl — which phase would be closer to the center and which to the shell? • Compare the three horizontal connections A, B, and C: which one is likely for clean oil, which for water, and which for feed or sealing water based on where their internal passages go?

✅ Before You Answer

• Follow the internal passage from port B into the bowl and see whether it connects to the light phase layer, heavy phase layer, or inlet distributor • Check which port’s passage connects directly down the center to the inlet distributor – that will indicate the dirty oil inlet • Identify where sealing water enters: it will usually connect to a passage leading to the water-lock space at the bottom of the bowl, not directly to an oil layer