Atlas Copco Oil Separator 1622035101: Reliable Oil-Air Separation for Screw Compressors

The Atlas Copco Oil Separator 1622035101 plays an important role in oil-injected screw air compressor systems. An oil separator removes oil mist from compressed air after the compression process and helps return separated oil to the compressor’s oil circuit. This process supports cleaner compressed air while helping the compressor maintain stable and efficient operation.

Atlas Copco identifies 1622035101 as an oil separator and lists 2903035101 as the associated product reference. The official Atlas Copco product information also lists a product weight of approximately 179 g for 2903035101.

For replacement applications, correct identification remains essential. Compressor models, serial numbers, and equipment configurations can vary, so users should confirm the part number before installation.

What Does an Oil Separator Do?

An oil-injected screw compressor uses oil during compression for functions such as lubrication, cooling, and sealing. After compression, the air-oil mixture must pass through a separation stage before compressed air leaves the compressor package.

The oil separator helps separate fine oil droplets from the compressed air stream. The recovered oil can then return to the compressor oil circuit, while the compressed air continues toward the outlet system.

A properly functioning separator therefore helps:

• Reduce oil carryover
• Maintain cleaner compressed air
• Support oil recovery
• Protect downstream equipment
• Maintain compressor efficiency
• Reduce unnecessary maintenance
• Support dependable compressor operation

A worn or overloaded separator can negatively affect separation performance and may contribute to increased oil carryover and pressure-related efficiency losses.

Atlas Copco Oil Separator 1622035101 Features

The 1622035101 oil separator offers a practical replacement solution for compatible Atlas Copco oil-injected screw compressors.

Efficient Oil Separation

The separator removes oil mist from compressed air and supports effective oil recovery within the compressor system. Efficient separation helps maintain the intended oil balance and reduces unwanted oil movement into the compressed-air network.

Cleaner Compressed Air

Oil carryover can create problems in compressed-air applications, especially where air cleanliness matters. A properly functioning oil separator helps reduce oil contamination before the air reaches downstream equipment.

Supports Compressor Protection

Excessive oil carryover can increase contamination throughout the compressed-air system. Maintaining the separator helps support the compressor and downstream components.

Consistent Compressor Performance

A correctly functioning separation system helps the compressor maintain its designed operating conditions. Regular replacement can contribute to consistent performance and reliable operation.

Compact Replacement Design

The 1622035101 reference is associated with a compact separator configuration. Third-party technical listings report dimensions around 260 mm height, 109 mm outside diameter, and M32 × 1.5 thread, but users should verify these specifications against their actual compressor and replacement component before purchase.

Compatible Compressor Applications

The Atlas Copco Oil Separator 1622035101 appears in replacement-part listings for several Atlas Copco compressor applications.

Reported applications include:

• Atlas Copco GX15
• Atlas Copco GX18
• Atlas Copco GX22
• Atlas Copco GA15
• Atlas Copco GA18
• Certain GA15 FF configurations

Some application listings specify serial-number ranges, which shows why technicians should not rely only on the compressor model name.

Always match the part number with the compressor model, serial number, and existing separator before installation.

Why Regular Oil Separator Replacement Matters

The oil separator operates continuously while the compressor runs. Over time, the separation media can accumulate contaminants and experience increasing resistance to airflow.

A separator that reaches the end of its useful service condition may show symptoms such as:

• Increased oil carryover
• Higher pressure differential
• Reduced compressor efficiency
• Excessive oil consumption
• Oil contamination in downstream piping
• Unstable compressor performance
• Increased maintenance requirements

Replacing the separator at the appropriate maintenance interval helps maintain effective oil-air separation.

Some service providers commonly recommend separator replacement around 4,000 operating hours, but actual replacement intervals depend on the compressor, operating environment, oil quality, load profile, and manufacturer maintenance schedule.

Signs You May Need a New Oil Separator

Technicians should monitor compressor performance and investigate changes in operating conditions.

Increased Oil Carryover

If excessive oil begins appearing in downstream compressed air, inspect the separator and associated oil-return system.

Rising Pressure Differential

A restricted separator can increase pressure loss across the element. Check differential pressure according to the compressor manufacturer’s recommended procedure.

Increased Oil Consumption

Unusual oil consumption can indicate problems within the separation system, although technicians should also inspect other possible causes.

Reduced Efficiency

A restricted or deteriorated separator may increase compressor operating losses. Regular inspection can help identify problems before they affect production.

Frequent Compressor Alarms

Operating abnormalities can result from multiple causes. When alarms occur, technicians should diagnose the complete compressor system rather than replacing parts without verification.

Benefits of Using the Correct Replacement Separator

Choosing the correct separator provides several practical benefits.

Maintain Proper Separation

The correct component supports the compressor’s intended oil-separation process.

Protect Downstream Equipment

Reduced oil carryover helps limit contamination in air lines, filters, dryers, pneumatic equipment, and other downstream components.

Support Longer Equipment Life

Good filtration and separation practices can reduce contamination-related wear and support the service life of compressor components.

Reduce Unplanned Downtime

Scheduled maintenance helps technicians replace components before severe restriction or separation problems affect production.

Improve Maintenance Planning

Using the correct part number makes purchasing and maintenance planning easier and reduces the risk of installing an unsuitable component.

How to Choose Atlas Copco Oil Separator 1622035101

Before purchasing, check the following information:

1. Part number: Confirm 1622035101.
2. Compressor brand: Confirm Atlas Copco.
3. Compressor model: Check the exact model.
4. Serial number: Verify the equipment serial number where required.
5. Existing separator: Compare dimensions, connections, and identification markings.
6. Replacement reference: Atlas Copco currently associates 2903035101 with the 1622035101 separator reference.
7. Installation requirements: Follow the compressor manufacturer’s maintenance instructions.

Do not select a separator based only on appearance. Two components can look similar while having different dimensions, filtration characteristics, or application requirements.

Installation and Maintenance Tips

Always isolate the compressor and follow appropriate lockout and pressure-release procedures before performing maintenance.

During replacement:

• Shut down the compressor.
• Isolate the power supply.
• Release stored pressure safely.
• Allow hot components and oil to cool.
• Remove the old separator according to the service procedure.
• Inspect seals and related connections.
• Install the replacement component correctly.
• Check the oil-return/scavenge system.
• Restore the compressor to service.
• Inspect for leaks.
• Monitor operating pressure and oil carryover.

Use the compressor manufacturer’s service instructions for the exact installation procedure and tightening requirements.

Common Causes of Oil Carryover

An oil separator does not operate independently. Oil carryover can result from several conditions.

Possible causes include:

• Worn or restricted separator
• Incorrect compressor oil level
• Incorrect oil type
• Blocked oil-return line
• Scavenge system problems
• Incorrect operating conditions
• Damaged seals
• Compressor system faults

Therefore, technicians should diagnose the complete oil-separation circuit when excessive oil carryover occurs.

Atlas Copco 1622035101 Replacement Reference

Atlas Copco’s official online parts information identifies the product as Oil Separator (=1622035101) under product number 2903035101.

Other industry listings also cross-reference 1622035101 with 1622035100, 2255300407, and 2903035101, among other references. Cross-reference information should be treated as a verification aid rather than an automatic guarantee of compatibility.

Why Buy from a Reliable Compressor Parts Supplier?

A reliable compressor-parts supplier can help you identify the correct separator before you place an order. This matters because compressor parts can vary by model, configuration, and serial-number range.

A professional supplier should help you verify:

• Part number
• Compressor model
• Application
• Dimensions
• Replacement reference
• Availability
• Installation requirements

This approach reduces the risk of purchasing an incorrect component and helps maintenance teams complete service work more efficiently.

Final Thoughts

The Atlas Copco Oil Separator 1622035101 is an important component for compatible oil-injected screw compressors. It supports the separation of oil mist from compressed air, helps control oil carryover, and contributes to reliable compressor operation.

Atlas Copco’s current parts information links 1622035101 with product number 2903035101, while application references show use across selected Atlas Copco GX and GA compressor configurations.

For the best result, verify the exact part number, compressor model, and serial number before ordering. Regular inspection and timely replacement can help maintain separation performance, compressed-air quality, compressor efficiency, and dependable operation.