Air Dryer Pre Filter
Iveco Air Dryer Filter 2992261 Equivalent to Sakura AC-7901.Scania 1375997.Caterpillar 2032389.
What is an air dryer pre filter?
An air dryer pre-filter, as the name suggests, is a filter that is installed upstream of an air dryer in a compressed air system. Its primary purpose is to remove larger particles, such as dust, debris, and solid contaminants, from the incoming compressed air stream before it reaches the air dryer.
The air dryer pre-filter serves as the first line of defense in the filtration process and helps protect the air dryer and other downstream components from the damaging effects of larger particles. By removing these larger contaminants, the pre-filter helps prevent them from reaching and potentially clogging or damaging the air dryer or other equipment in the system.
Common types of pre-filters include:
1.Particulate Filters: Particulate filters, also known as dust filters or general-purpose filters, are designed to remove solid particles of various sizes from the compressed air stream. They typically use filter media with specific micron ratings to trap particles and prevent them from passing through.
2.Coalescing Filters: Coalescing filters specialize in removing liquid aerosols and oil mist from the compressed air. They utilize specialized filter media and designs to coalesce or combine small liquid droplets into larger droplets, which can then be separated and drained away.
The choice of pre-filter depends on the specific requirements of the compressed air system, the level of filtration needed, and the potential contaminants present in the compressed air. The pre-filter should be selected to effectively capture and remove the contaminants of concern while maintaining an acceptable pressure drop and flow rate.
It's worth noting that the pre-filter is typically separate from the air dryer itself, although they are often installed together in a filtration system. The pre-filter helps extend the life and performance of the air dryer, as well as other downstream filters, by reducing the load on these components and improving overall system efficiency and reliability. Regular maintenance and monitoring of the pre-filter are necessary to ensure its effective operation and to prevent contamination from bypassing the pre-filter and reaching the air dryer or downstream components.
