Why an aeration filter?
No matter how small or large aeration filters may be, they are essential to prevent a fouling or contamination, for example, in oil reservoirs. The filters can also ensure that the supply of air is free of vapors.
The aeration filters we supply meet the highest quality standards. Air Sentry Breathers use a three-stage filtration design to ensure optimal protection by removing water vapor and solid contaminants before they enter the fluid system.
The operation of an aeration filter.
First, the air passes through a fine filter, 2 μm solid particle filter. The air then passes through a diffuser to ensure maximum effectiveness in the silica gel chamber. Water vapor is then removed as the air passes through a bed of silica gel, the highest capacity adsorbent available. After drying, the air passes through a second 2 μm solid particle filter and enters the reservoir clean and dry.
The incoming air is cleaned and dried.
Exhausted air partially regenerates the silica gel and blows back the particulate filter to extend the life of the vent. Silica gel is chemically inert, non-toxic, non-flammable and non-corrosive. Its internal structure consists of interconnected microscopic pores that adsorb up to 40% of its weight. When maximum adsorption is reached, the silica gel changes from yellow to blue to indicate that replacement of the vent is required.