Atlas Copco Inlet Valve Unloader Repair Kit Replacement – 2200900961

The Atlas Copco 2200900961 Inlet Valve Unloader Repair Kit is an OEM service kit designed to rebuild the compressor’s inlet (unloader) valve. It contains the essential wear components required to restore proper operation of the inlet valve, ensuring efficient loading and unloading of the compressor, stable air delivery, and reduced energy consumption. It is commonly referred to as KIT SPARES UNLOADER C55.

Key Features

• Genuine Atlas Copco inlet valve repair kit
• Rebuilds the inlet/unloader valve assembly
• Restores proper load and unload operation
• OEM-quality seals and wear components
• Improves compressor efficiency and reliability
• Recommended during scheduled maintenance (typically around every 8,000 operating hours or 2 years, depending on operating conditions).

Benefits

• Restores correct air intake control
• Eliminates air leakage from the inlet valve
• Improves pressure build-up and compressor performance
• Reduces unnecessary energy consumption
• Extends inlet valve service life
• Minimizes unplanned downtime and maintenance costs.

Working Process

1. The compressor starts with the inlet valve in the unloaded position.
2. When air demand increases, the rebuilt inlet valve opens to allow atmospheric air into the air end.
3. As system pressure reaches the set point, the unloader mechanism closes or modulates the valve to stop unnecessary compression.
4. The new seals and internal components ensure smooth valve movement, proper sealing, and efficient load/unload cycling.

Typical Applications

• Atlas Copco rotary screw air compressors
• Quincy QGS 10 and QGS 15 compressors
• Chicago Pneumatic QRS 10 and QRS 15 compressors
• Other compatible compressors using the C55/RH38 inlet valve design.