Atlas Copco Oil Stop / Check Valve Kit Replacement – 2901108401

The Atlas Copco 2901108401 Oil Stop / Check Valve Kit is a genuine OEM service kit designed for selected Atlas Copco oil-injected rotary screw air compressors. This maintenance kit is engineered to restore the performance of the oil stop and check valve assembly, a vital component responsible for preventing oil backflow during compressor shutdown while maintaining proper oil circulation during operation. By ensuring stable oil pressure and efficient lubrication, the kit helps protect the airend and other critical compressor components from premature wear.

Manufactured to Atlas Copco’s stringent OEM quality standards, the 2901108401 Oil Stop / Check Valve Kit includes precision-engineered replacement components that provide reliable sealing, smooth valve operation, and long service life in demanding industrial environments. This kit is the updated replacement for Part No. 2901108400, offering improved serviceability while maintaining OEM performance. Regular replacement during scheduled preventive maintenance helps improve compressor efficiency, reduce oil leakage, minimize downtime, and extend equipment life.

Features

• Genuine Atlas Copco OEM service kit
• Part Number: 2901108401
• Replaces: 2901108400
• Oil Stop / Check Valve Kit
• Prevents oil backflow during shutdown
• Ensures proper oil circulation and lubrication
• Precision-engineered for OEM fit and performance
• High-quality sealing and wear-resistant components
• Designed for long service life

Typical Kit Contents

• Oil Stop Valve – 1 pc
• Check Valve (C111/C106) – 1 pc
• Oil Stop Valve Spring – 1 pc
• Spring – 1 pc
• O-Ring 69.5 × 3 – 1 pc
• O-Ring 32.2 × 3 – 2 pcs
• O-Ring 19.2 × 3 – 1 pc
• Gasket – 1 pc
• Seal Washer M32 – 2 pcs
• Dowty Seal Washer (1/2″) – 1 pc
• Plug G 1/4 A – 1 pc
• Assembly Instructions – 1 pc

Applications

• Atlas Copco Oil-Injected Rotary Screw Air Compressors
• Compressor Oil Circulation System
• Oil Stop and Check Valve Assembly Maintenance
• Preventive Maintenance and Overhaul

Benefits

• Prevents oil backflow during compressor shutdown
• Maintains proper oil pressure and lubrication
• Improves compressor efficiency and reliability
• Reduces internal leakage and component wear
• Minimizes maintenance costs and unexpected downtime
• Extends compressor service life

Specifications

• Part Name: Oil Stop / Check Valve Kit
• Part Number: 2901108401
• Brand: Atlas Copco
• Replaces: 2901108400
• Approximate Weight: 497 g
• Application: Oil stop and check valve maintenance for selected Atlas Copco oil-injected rotary screw air compressors. Verify compatibility using the compressor model or serial number before installation.

Disclaimer: All manufacturer names, trademarks, model numbers, and part numbers are used solely for identification and compatibility purposes. Our products are high-quality aftermarket replacement products and are not manufactured, sponsored, endorsed, or authorized by the original equipment manufacturer (OEM). All trademarks remain the property of their respective owners.