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Membrane Air Treatment
The carefully engineered
Champion membrane dryer design
provides a reliable method to
remove moisture as a water vapor
while coalescing filters remove
solid particles, liquid water
droplets, liquid oil and oil
vapors from the compressed air
system.
CMD SERIES MEMBRANE DRYERS
OFFER FLEXIBLE PRESSURE
DEW POINTS BETWEEN +40°F AND
40°F (+4°C TO 40°C)
Moisture (water vapor) is
present in ambient air as a gas
and cannot be
filtered.
Membrane fibers present in the
CMD Series remove water vapor to
prevent it from condensing into
harmful liquid water droplets
inside compressed air systems.
Powder
painting, laboratory instruments
and food packaging machines with
pneumatic components are
examples of applications which
cannot tolerate the presence of
any moisture.
CFF SERIES GRADE E AND GRADE
F COALESCING FILTERS REMOVE
WATER
DROPLETS AND SOLID PARTICLES TO
0.01 MICRON
Water droplets are formed by the
condensed water vapor present in
ambient air. Solid
particles come from ambient air
contaminants like dust and from
rusted, oxidized
pipework. They can cause
pneumatic equipment to
malfunction and trigger
instrument
and control failures.
CFF SERIES GRADE G FILTERS
REMOVE OIL AND OIL VAPORS FOR
OIL-FREE AIR
Liquid oil and oil vapors are
introduced by compressor
coolants and by hydrocarbon
vapors present in ambient air.
Oil-free compressed air is
particularly important in food
and pharmaceutical processes
where direct and indirect
contact with compressed air
occurs. Oil contamination of
food and drug products can
generate significant liability
issues and manufacturing
spoilage costs.
Membrane Technology
MEMBRANE FIBERS DRY
COMPRESSED AIR WITH NO OXYGEN
LOSS
The CMD Series Membrane Dryer
utilizes a spiral wrapped bundle
of tubeshaped
membrane fibers to remove water
vapor from the compressed air
stream. These fibers are
engineered to separate moisture
without reducing the oxygen
content in the compressed air
stream.
Compressed air should be
prefiltered prior to the
membrane dryer. We recommend
Champion CFF Series Grade C
prefiltration (1 micron solid
particles) and then an CFF
Series Grade F oil removal
filter (oil removal to 0.0008
ppm). In situations where the
maximum inlet liquid load is
less than 1,000 ppm, a CFF
Series Grade E oil removal
filter may be used as a
stand-alone prefilter (0.01
micron particles and 0.008 ppm
oil removal).
After prefiltration of liquid
oil and water, the saturated air
now begins passing through the
outer walls of the membrane
tubes. The air is dried as it
traverses the length of the
membrane bundle by the process
of permeation and exits the
dryer for use downstream having
achieved its design dew point.
Permeation is the name of the
process by which water vapor
moves from the outside of the
tubes (area of high vapor
pressure), to the inside of the
tubes (area of low vapor
pressure). A fraction of the
compressed air will sweep the
water vapors through the
membrane walls and exit the
dryer through the sweep air
ports on the dryer.
Features
INSTALLATION CONVENIENCE
Lightweight modules can be
installed on machinery or in
instrumentation control rooms
without the need for additional
support
Does not require electric
power to run, eliminating the
need for a power source
Great for portable
applications due to the
self-sufficient design
In-line T type connection to
prefilters make it easy to
incorporate it into an existing
OEM package design
Durable under many
environmental conditions: high
and low temperatures, corrosive
and explosive atmospheres,
indoors or out
Replaceable membrane bundle
HOUSINGS
Rugged, welded aluminum
housing is epoxy coated for
durability
Space-saving modular
connection to prefilters
NO OPERATOR OR INPUT POWER
REQUIRED
Simply hook the membrane dryer
up to the compressed air system
and walk away
No adjustments necessary, no
instruments required
No maintenance as there are no
moving parts which will wear out
Long-life membranes with
proper liquid oil and water
prefiltration
MODULAR PREFILTRATION
PACKAGES WITH MOUNTING SYSTEMS
Utilize one Champion CFF
Series Grade E High Efficiency
Oil Removal Filter for normal
conditions with less than a
1,000 ppm inlet liquid load.
This single prefilter package is
very common with OEM
applications
Utilize two CFF Series
filters, the CFF Series Grade C
General Purpose Filter and the
CFF Series Grade F Maximum Oil
Removal Filter, for extreme
conditions with greater than a
1,000 ppm inlet liquid load.
The dual prefilter package is
very common with painting
applications
A CFF Series Grade G Oil Vapor
Removal Filter should be
utilized as the final filter for
food and pharmaceutical
applications where compressed
air comes into direct/indirect
contact with these end products
Convenient mounting systems
for all filter combinations are
available consisting of a
wall-mounting bracket, modular
connection kit from filter(s) to
dryer, and a modular filter
connection kit should there be
two prefilters. The
filters include automatic drains
and a differential pressure
indicator to signal the need for
element replacement
Sizing Information
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