Coalescing Filter

Coalescing Filters for Compressed Air Systems

Coalescing filters are critical components in compressed air treatment systems, engineered to remove fine liquid aerosols — including oil mist and water droplets — and sub-micron contaminants from compressed air before it reaches tools, machinery or production processes. These filters improve air quality, protect equipment and help extend service life across your system. :contentReference[oaicite:0]{index=0}

What Is a Coalescing Filter?

A coalescing filter uses specially designed filtration media to force compressed air through a dense network of fibres. As the air passes through, tiny water and oil droplets collide with the fibres and each other, coalescing into larger droplets that separate from the airflow and are drained away. The result is cleaner, drier air with significantly reduced liquid contamination. :contentReference[oaicite:1]{index=1}

How It Works

• Dense media filtration: Fine glass or synthetic fibres capture microscopic liquid aerosols.
• Coalescence: Small droplets merge and grow until gravity pulls them out of the airflow.
• Drainage: Condensed liquid collects at the bottom of the filter housing and is discharged using a drain valve. :contentReference[oaicite:2]{index=2}

Why Coalescing Filters Matter

Compressed air from oil-injected compressors contains water and oil aerosols that can cause serious issues if not removed, including corrosion, seal damage, clogged valves, and contamination of end products. A coalescing filter protects your pneumatic equipment and reduces unscheduled downtime by preventing these contaminants from circulating through your air system. :contentReference[oaicite:3]{index=3}

Key Benefits

• Removes oil aerosols and water droplets to sub-micron levels
• Protects downstream equipment and tools
• Improves system reliability and performance
• Reduces maintenance costs and extends service intervals
• Helps achieve higher air quality for sensitive applications

Typical Applications

Coalescing filters are essential wherever high-quality compressed air is required, including:

• Industrial manufacturing and automation
• Paint spraying, finishing and surface preparation
• Pneumatic instrumentation and control systems
• Food & beverage, pharmaceuticals and cleanroom operations

Installation & Maintenance

Coalescing filters are typically installed downstream of general particulate filters and upstream of dryers or final use points. Regular maintenance — including element replacement at recommended intervals — ensures continued performance and avoids pressure drop increase across the system. :contentReference[oaicite:4]{index=4}

Coalescing Filters at Compressed Air Systems UK

At Compressed Air Systems UK, we offer a range of high-performance coalescing filters to suit compressed air systems of all sizes. Whether you need filters for workshop machinery, industrial systems or point-of-use protection, our team can help you select the right solution for your application and budget. :contentReference[oaicite:5]{index=5}