Figure 10-36.-Tubular-type centrifugal purifier.
The viscosity of the oil will determine the length of
pressure applied to the oil,
size of the sediment particles,
time required to purify the oil. The more viscous the oil,
difference in the specific gravity of the oil,
the longer the time will be to purify it to a given degree
of purity. Heating decreases the viscosity of the oil, and
substances that contaminate the oil, and
this is one of the most effective methods to make
tendency of the oil to emulsify.