Yes, you absolutely need a line filter before a refrigerated air dryer. The filter removes bulk water, oil, and particulates that can damage the dryer and clog its components, ensuring it can function efficiently and the compressed air is cleaner.
Why a line filter is necessary before the dryer？
Protects the dryer: Compressed air from the compressor contains liquid water, oil, and dirt, which can cause wear and tear on the dryer's internal components.
Improves dryer performance: Removing these contaminants beforehand allows the dryer to focus on removing the remaining water vapor, leading to more effective drying.
Extends equipment life: By preventing the build-up of contaminants, filters reduce the risk of corrosion and other damage in the downstream piping and equipment, lowering maintenance costs.