{E} Air Oil Separator Primary

Keep your compressed air system operating reliably with a high-quality replacement air/oil separator from Edmac Compressor Parts. Designed for oil-lubricated air compressors, an air/oil separator removes lubricant from the compressed air stream, helping reduce oil carryover while allowing separated oil to return to the compressor system.

In oil-injected rotary screw compressors, air and lubricant mix during compression. The separator captures fine oil droplets and aerosols before compressed air leaves the compressor. A worn, saturated, or restricted separator can contribute to excessive oil carryover, increased lubricant consumption, pressure drop, and reduced efficiency.

Edmac offers replacement air/oil separators for a wide range of air compressor makes and models, including spin-on and separator element designs. Find the correct replacement using your existing separator number, compressor information, or OEM part number.

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Benefits of Replacing Your Air/Oil Separator

• Helps remove oil mist and aerosols from the compressed air stream
• Helps reduce excessive oil carryover into downstream compressed air equipment
• Helps return separated lubricant to the compressor system
• Supports efficient compressor operation
• Helps reduce unnecessary lubricant consumption
• Helps maintain proper pressure differential across the separation system
• Suitable for routine preventive maintenance and separator replacement
• Available for a wide range of industrial air compressor makes and models

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What does an air/oil separator do in an air compressor?

An air/oil separator separates compressor lubricant from compressed air in an oil-injected compressor. During compression, air and lubricant become mixed. The separator captures fine oil droplets and aerosols before the compressed air leaves the compressor package, allowing separated lubricant to return to the compressor's lubrication system while cleaner compressed air continues downstream.

Why is replacing an air/oil separator important?

Over time, an air/oil separator can become saturated, contaminated, or restricted. A worn or restricted separator may increase pressure drop across the separator and can contribute to excessive oil carryover, increased oil consumption, higher operating temperatures, and reduced compressor efficiency. Replacing the separator at the appropriate maintenance interval helps maintain proper oil separation and reliable compressor operation.

What are the signs of a failing air/oil separator?

Common signs that an air/oil separator may require inspection or replacement include excessive oil carryover in the compressed air, increased lubricant consumption, high separator differential pressure, higher operating temperatures, or reduced compressor performance. Reaching the manufacturer's recommended separator service interval is also an indication that the separator should be inspected or replaced.

How often should an air/oil separator be replaced?

Air/oil separator replacement intervals vary based on compressor manufacturer, model, operating environment, lubricant, maintenance practices, and hours of operation. Many rotary screw compressor maintenance schedules specify separator replacement at established operating-hour intervals. Always follow the maintenance recommendations for your specific compressor rather than relying on a universal replacement interval.

Is an air/oil separator the same as an oil filter?

No. An air/oil separator and an oil filter perform different functions. An oil filter removes contaminants from the compressor lubricant as it circulates through the lubrication system, while an air/oil separator removes lubricant droplets and aerosols from the compressed air stream before the air exits the compressor. Oil-injected rotary screw compressors commonly use both components as part of their filtration and separation systems.