Atlas Copco D&R Seal Kit Replacement – 2906013300

The Atlas Copco 2906013300 is a pipe/sealing service kit used in applicable ZR5/ZR6 oil-free compressor systems. Its purpose is to replace sealing components in the discharge/regulating pipe connection, helping maintain an airtight system and prevent compressed-air leakage.

Working Process

1. Compressed-Air Flow – Compressed air passes through the relevant ZR compressor piping.
2. Pipe Connection – The D&R/regulating section connects the associated compressor components.
3. Sealing – The seals maintain an airtight connection between mating pipe components.
4. Leak Prevention – Proper seals prevent compressed air from escaping from the connection.
5. Pressure Maintenance – Good sealing helps maintain the designed compressor pressure and airflow.
6. Wear Over Time – Heat, pressure cycles and operating conditions can deteriorate the seals.
7. Seal Replacement – During scheduled maintenance, the old sealing components are replaced with the 2906013300 kit.
8. Testing – After reassembly, the connection is pressurized and checked for leakage.

Main Functions

• Replaces worn pipe sealing components.
• Maintains airtight pipe connections.
• Helps prevent compressed-air leakage.
• Supports proper compressor pressure.
• Helps maintain reliable ZR5/ZR6 operation.
• Reduces the risk of pressure loss and unnecessary energy consumption.

Possible Failure Symptoms

A deteriorated pipe seal can cause:

• Audible air leakage.
• Pressure loss.
• Reduced compressor efficiency.
• Increased compressor running time.
• Poor connection sealing.
• Increased operating noise around the pipe joint.

Maintenance Procedure

1. Shut down the compressor according to the applicable Atlas Copco service procedure.
2. Isolate the electrical supply.
3. Fully depressurize the compressor.
4. Allow the system to cool.
5. Access the applicable D&R/pipe connection.
6. Remove the existing sealing components.
7. Inspect the pipe and mating surfaces.
8. Clean the sealing surfaces.
9. Install the replacement components from 2906013300.
10. Ensure the seals are correctly positioned.
11. Reassemble the pipe connection.
12. Tighten according to the applicable Atlas Copco specifications.
13. Gradually repressurize the system.
14. Check the connection for air leakage.
15. Restart the compressor and verify normal operation.

Technical Summary

Recommended catalog title:
Atlas Copco 2906013300 – ZR5/6 Pipe Seal / D&R Seal Kit, 2906-0133-00.

Atlas Copco’s official page identifies 2906013300 specifically as the ZR5/6 Pipe Seal Kit. The Atlas Copco Z-Series parts catalog also lists 2906-0133-00 as “KIT, D & R SEAL.”