Data Sheet for Product

Technical Instructions Inline Air Filter
Document Number A6V11251777
Septemer 29, 2017
Page 2 Siemens Industry, Inc.
Specifications
Operating
Maximum pressure 125 psig (827kPa)
Maximum temperature 125°F (52°C)
Maximum flow 1434 scim (391mL/s) @ 20 psig (138kPa)
and 1 psig (6.9kPa) pressure drop.
Maximum pressure drop at maximum flow 1 psig (6.9 kPa)
D.O.P. filtration efficiency 99.9% (0.2 micron)
Material Transparent polyurethane housing with a
borosilicate microfiber filter element
Air Connections, Tapered Barbs Fits 1/4-inch (6mm) OD poly tubing or
3/8-inch (10mm) polyethylene tubing.
Dimensions 1.06-inch diameter × 3.45-inch long.
Operation
As air enters the filter, it passes through a coalescing section of the element. Here, the
fine oil aerosol is captured on nonabsorbing surfaces, coalesced into larger droplets,
and then allowed to pass to the oil absorbing section of the media.
The unique oil absorbing filter medium has a high affinity for oil and is unaffected by
water. This combination of properties is important because it allows the filter element to
retain its full oil absorbing capacity despite any water present in the air stream.
This filter does not remove entrained water from the air and water removal, when
necessary. Instead, it requires additional equipment such as a refrigerated air dryer.
The filter medium consists of individual particles which are relatively light and soft. The
filter medium does not tend to grind up or break up. The particles retain their original
size and shape, assuring that they will be completely retained within the filter.
As the filter medium becomes saturated with oil, it turns from its original white color to a
shade of red. The red color gradually rises up the bed as the line of oil saturation
progresses. This visible color indicates when the element should be replaced. As the
element becomes saturated, there is no change in filtration efficiency – it remains at its
original high value throughout the life of the element.
The filter air passages are always large, relative to the size of droplets and particles
being removed. Therefore, pressure drop through the filter remains low and there is no
tendency to plug as in membrane or screen filtration.
Filter Sizing
Air filters must be able to handle the maximum instantaneous demand of a pneumatic
system or controller. Air filters should be sized at twice the specified air consumption of
all pneumatic control devices attached to the filtered side of the “Mains” airflow.
Here is a simple example to demonstrate the calculation:
A Powerstar Thermostat specified air consumption is 20 SCFM. Therefore, the air filter
flow usage for this one device should be calculated at 40 SCFM.
As this filter has a maximum flow of 1,400 SCFM, this would then estimate that 35
Powerstar Thermostats could be attached to this filtered air line.