A. Overview: Parker Balston Coalescing Compressed Air Filters protect your equipment and delicate instruments from the dirt, water, and oil usually found in compressed air. Parker Balston Coalescing Filters remove these contaminants at a very high efficiency -up to 99.99% of 0.01 micron particles and droplets. Liquid releases from the filter cartridge to an automatic drain as rapidly as it enters the filter. This allows a Parker Balston Coalescing Filter to continue to remove liquids for an unlimited time without loss of efficiency or flow capacity.B. Parker Balston Filter Cartridges: Balston provides two grades of coalescing filter cartridges, Parker Balston Grade DX and Grade BX. Singly or in tandem, these filters satisfy all requirements for removing liquid and solid contaminants from compressed air. Balston also has an activated carbon adsorbent CI-type cartridge for the removal of trace oil vapors from a compressed air line.
C. Selecting the proper filter cartridge
1. Decide which grade(s) of filter cartridges fit the application
a- For general purpose applications such as plant compressed air, single stage filtration is often sufficient. Use a Parker Balston Grade DX filter cartridge.
b- For instrument air and other critical air requirements, two stage filtration is necessary. Use Parker Balston Grade DX followed by a Parker Balston Grade BX filter cartridge. As a general rule, a Parker Balston Grade BX Filter cartridge should not be used alone.
c- For removal of trace compressor oil vapor, three stage filtration is necessary. Use a Parker Balston Grade DX followed by a Parker Balston Grade BX and a Parker Balston type CI cartridge.
2. Retention Efficiency for 0.01 Micron Particles and Droplets
b- Parker Balsotn Grade BX Filter - 99.99% Efficiency
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