Atlas Copco Screw Air Compressor Spare Part Intake Unloader Valve
High-quality Atlas Copco Intake Unloader Valve 1623178680 for screw air compressors. Durable aluminum body, precision sealing, and fast response ensure reliable airflow control and energy-efficient performance.
| Application |
Air Compressor |
|---|---|
| Material |
Aluminum ,Stainless Steel |
The Atlas Copco Intake Unloader Valve (1623178680) is an essential control component for oil-injected screw air compressors, responsible for regulating the intake airflow during loading and unloading operations. Its precise pneumatic control ensures that the compressor starts smoothly, maintains steady discharge pressure, and minimizes unnecessary energy consumption during idle cycles. This valve directly affects system efficiency, motor protection, and air stability—making it one of the most critical elements in the air compression process.
Working Principle
During compressor start-up, the valve remains closed to prevent air intake, allowing the motor to accelerate without load. As system pressure drops below the set threshold, the control signal triggers the valve to open, allowing air into the compression chamber. When the target pressure is reached, the valve closes again or partially restricts intake, reducing air supply and switching the compressor into an energy-saving idle state. This smooth transition between load and unload states protects internal components from pressure shocks and maintains optimal energy balance.
Construction and Material Features
The Atlas Copco 1623178680 valve is engineered for durability and precision in demanding industrial environments. Key design features include:
- Valve Body: Die-cast aluminum alloy with anti-corrosion anodized surface, providing lightweight strength and resistance to oil mist and heat.
- Internal Spool & Piston: Hardened stainless steel with ultra-smooth surface finish (Ra ≤ 0.2 µm) for friction-free sliding under high-frequency operation.
- Seal Rings: High-performance Viton O-rings ensure perfect sealing under oil and heat exposure, maintaining airtight performance over long duty cycles.
- Spring Assembly: Precision-wound alloy spring calibrated to provide consistent actuation pressure and quick response.
- Diaphragm & Seat Assembly: Flexible polymer diaphragm reinforced with fiber mesh to enhance fatigue resistance and maintain sensitivity in response to control pressure changes.
- Connection Ports: BSP threaded interface designed for direct installation on Atlas Copco GA/GX compressor intake manifolds.
Performance Advantages
Compared with conventional intake valves, this model provides more consistent air delivery and faster response to pressure changes. Its compact structure and efficient sealing design help maintain stable discharge pressure and reduce power losses caused by internal leaks. The optimized airflow path minimizes turbulence, resulting in quieter operation and improved compressor performance. It also supports smooth start-up and controlled unloading, which helps lower stress on the electric motor and other key compressor components.
Quality Control and Reliability
Each valve undergoes a strict quality control process before shipment. Every unit is air-leak tested under pressure, cycle-tested for endurance exceeding 80,000 operations, and inspected dimensionally with precision measuring instruments. The surfaces of moving parts are checked for smoothness to prevent frictional wear. Functional tests are conducted under simulated operating conditions to ensure the valve’s responsiveness, stability, and compatibility with Atlas Copco compressor systems.
Installation and Maintenance
Proper installation and routine inspection are essential to ensure consistent valve performance. Before installation, confirm that the compressor system is fully depressurized. Clean the intake manifold and apply appropriate thread sealant or gasket material as specified by the manufacturer. During operation, check control lines for leaks or blockages and monitor the valve’s actuation behavior. It’s recommended to inspect and replace internal seals or diaphragms every 6,000–8,000 working hours, depending on usage conditions. If you notice delayed unloading, unstable pressure, or audible leaks, the valve may require cleaning or replacement.
Compatibility and Application
The 1623178680 Intake Unloader Valve is suitable for a wide range of Atlas Copco GA and GX series screw air compressors. It is fully interchangeable with the original OEM component and follows the same connection standards and flow characteristics. This ensures direct installation without modification and reliable integration with existing pneumatic and control systems.
| Part Numbers | |||||||
|---|---|---|---|---|---|---|---|
| 1613681801 | 1613900884 | 2911000000 | 1617238400 | 2901046100 | 2910300200 | 1622963900 | 1623079485 |
| 1622171383 | 2901145300 | 2901000500 | 2901021200 | 1613679300 | 2906020100 | 2901141100 | 2901084001 |
| 1622316200 | 1625005540 | 2901000600 | 2901108401 | 1622171300 | 2901139900 | 2901099700 | 2205490598 |
| 1622316285 | 2906009500 | 3015500606 | 2200900943 | 1613900800 | 1614647680 | 1617238400 | 2906063320 |
| 1613814400 | 2901099700 | 1622963900 | 2906038000 | 1614900883 | 1513040081 | 2901021200 | 2901021701 |
| 1614900801 | 3001500626 | 2901084001 | 2901145300 | 1613815000 | 2906095900 | 2901108401 | 2901021200 |
We also offer intake unloading valves with the above part numbers. Please feel free to contact us if needed.
Specification Summary
| Parameter | Description |
|---|---|
| OEM Brand | Atlas Copco |
| Part Number | 1623178680 |
| Function | Intake Unloader Valve |
| Type | Pneumatic Control / Airflow Regulation |
| Material | Aluminum Alloy, Stainless Steel, Viton |
| Compressor Type | Oil-Injected Screw Air Compressor |
| Installation | Direct Replacement – OEM Fit |
Why Choose Our Valves
Our unloader valves are manufactured with precision CNC machining and assembled under ISO-certified conditions. Every product ensures reliable sealing, fast response, and long service life comparable to the original Atlas Copco standards. By maintaining strict control over materials and assembly, we deliver consistent quality and dependable performance for industrial users who demand both efficiency and durability.
MAECENAS IACULIS
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