Atlas Copco Unloader Unloading Valve 1622353982 for Screw Air Compressor
High-precision unloader valve assembly designed for Atlas Copco screw compressors, made from durable aluminum alloy with anti-corrosion surface treatment, providing smooth load control, reliable air regulation, and extended service life.
| Application |
Screw Air Compressor |
|---|---|
| Material |
Aluminum ,Stainless Steel |
The Atlas Copco unloading valve 1622353982 is a key component in the intake and pressure regulation system of an screw air compressor. Its main function is to control the transition between load and unload states, ensuring smooth compressor start-up and shutdown, and avoiding pressure fluctuations and energy loss.
During operation, this valve automatically adjusts the intake path to maintain stable system pressure. When the compressor is unloaded, it releases excess air, preventing overpressure and reducing motor load, thereby improving the efficiency and durability of the compressor system.
Material & Construction
The 1622353982 unloader valve features a cast aluminum alloy body that combines strength, precision, and resistance to corrosion. The surface is treated with anodic oxidation, forming a dense protective layer that prevents rust, oil residue buildup, and wear caused by high operating temperatures.
Internal moving components, including pistons and valve seats, are crafted from hardened stainless steel to maintain tight sealing even under fluctuating pressures. The integrated O-rings use fluoroelastomer materials (Viton® or equivalent) for superior temperature resistance and long-term elasticity, ensuring no leakage under continuous cycling.
This construction not only reduces the valve’s overall weight but also improves heat dissipation, minimizing the risk of sticking or sluggish response during extended compressor runs.
Key Features
- Lightweight Design: Aluminum alloy housing reduces system load and enhances thermal efficiency.
- Precision Regulation: Maintains consistent airflow and pressure stability under various load conditions.
- Fast Response: Optimized piston structure ensures quick transition between loaded and unloaded states.
- Leak-Free Performance: Enhanced sealing system prevents air loss, improving overall compressor efficiency.
- Low Maintenance: Resistant to oil carbonization and temperature fatigue, reducing cleaning frequency.
Applications & Compatibility
The 1622353982 unloading valve is fully compatible with a variety of Atlas Copco oil-injected screw compressors, including the GA and GX series. It can be used in both constant-speed and variable-speed drive (VSD) configurations to regulate the intake system and support the compressor's automatic control logic.
OEM Reference Number: 1622353982
It is interchangeable with genuine Atlas Copco intake unloading assemblies for some compressor models. Please consult us for specific matching models to ensure our products are compatible with your air compressor.
| 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.
Performance & Maintenance Recommendations
This unloader valve is designed to withstand up to 15 bar working pressure and frequent switching cycles. For stable performance:
- Inspect the valve seat and piston every 5,000–8,000 operating hours.
- Clean any accumulated oil sludge or carbon deposits.
- Replace sealing elements if visible wear or air leakage occurs.
Using high-quality air filters and lubricants recommended for Atlas Copco systems will further extend the valve’s service life and maintain consistent pressure control.
Quality & Testing
Each unloader valve is 100% pressure tested and functionally inspected before shipment. The testing process includes leak detection, endurance cycle simulation, and flow consistency verification.
All production batches conform to ISO9001:2015 quality standards, ensuring interchangeability and reliable performance across different compressor models.
Why Choose This Unloader Valve
Our replacement unloader valve 1622353982 provides OEM-level performance with enhanced material stability and response speed. The upgraded aluminum body improves heat resistance while keeping the structure rigid and reliable under long-term vibration. Whether you are conducting routine maintenance or replacing a faulty valve, this unit offers a cost-effective, durable solution fully compatible with your Atlas Copco compressor system.
MAECENAS IACULIS
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