Air Dryers and Parts

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About Air Dryers

On heavy-duty trucks and other commercial vehicles with air brakes, air dryers are installed in between air compressor and the air tank. Before contaminants like water vapor and oil vapor can get to the air tanks and valves, they are filtered out by the air dryer. This keeps the air valves on the truck from freezing up during the winter and increases their lifespan. The water vapor in the air condenses when it is compressed. On air systems, the water will condense in the pipes or an air tank (also known as a "wet tank"), and the air is then passed through an air dryer before being fed to the rest of the system. Compressed air is passed through filtration and desiccant media in air dryers in order to remove moisture and collect oil (oil coalescing). The air reservoirs receive the dry, clean air, which is then distributed to the various systems. Every moment the air governor reaches the cut-out scenery, the filtration cartridge is purged to eliminate any remaining moisture and oil. A small amount of dry air is returned through the cartridge during the purge cycle, which removes the oil and water from the air dryer's base. By renewing the cartridge during this purge cycle, it can continue to filter until its service interval expires and it needs to be changed. When it's cold outside and an air dryer is most needed, it will have a heater to keep the purge valve from freezing shut. Heavy-duty trailers, buses, large pieces of machinery, and motor coaches all depend heavily on compressed air to function. To maintain these systems and keep the vehicle running, it's crucial to supply them with clean, dry, filtered air. Protecting the delicate and pricey air valves becomes more crucial as air systems become more complex with ABS, traction, roll stability, and automatic braking. A well-maintained air dryer can safeguard the air system and avoid freeze-up.