| Parker Finite’s media grade 4 is
usually chosen when an
extremely high coalescing
efficiency is required. Its
99.995% rating is the best
available and is ideal
for use as a final filter in
applications with elevated
operating pressures (up to
500 PSIG), or when removing
liquid contaminants
from gases that are lighter than
compressed air. |
Grade 6 filters are recomended when a
“total removal of liquid
aerosols and suspended
fines” is required. Because
of its overall performance
characteristics, grade 6
is most often recommended
in industrial
applications. This grade is an
excellent choice as a prefilter
for regenerative desiccant
air dryers, as it stops oil
or varnish from coating the
desiccant. |
Grade 8 filters combine high flow rate
with high efficiency (98.5%)
and long element
life. A separate prefilter is
not necessary for “normal to
light” particulate loading.
A grade 8 element is often
recommended as protection for
refrigerated air dryers. This
element allows the dryer
to maintain efficiency by
preventing the coating of
copper coils with the buildup
of varnish or oil. |
Grade 10 filters are used
as prefilters for grades
6 or 8 to remove large
amounts of liquid or tenacious aerosols.
Grade 10 is referred
to as a coarse coalescer, or
precoalescer. A grade 10 filter in a
media type D filter element
is recommended as an
after filter for heat regenerated
desiccant type air dryers
as its one micron rating is
perfect for collecting air dryer
desiccant fines before they
pass downstream. |
