The main functions of the CD5-2 valve used in Atlas Copco's oil-free ZR-ZT type compressors
Air path on-off control
As the core control component, the CD5-2 assembly precisely controls the flow and cutoff of compressed air between different air paths through the movement of its internal valve core. In coordination with the loading/unloading conditions of the compressor, it ensures a dynamic match between the exhaust volume and the gas demand, reducing energy loss.
Pressure regulation and balance
The built-in pressure sensing and regulating structure can automatically adjust the opening degree according to the system set pressure (such as working pressure, unloading pressure), maintaining the stability of the internal air path pressure in the compressor and avoiding overpressure or excessive pressure fluctuations that may cause damage to the main unit and pipelines.
Safety protection assistance
In case of abnormal pressure or flow in the compressor, it can quickly respond in conjunction with the control system by cutting off or diverting part of the airflow, assisting in system depressurization and providing a guarantee for the safe operation of the equipment.
Adaptation to oil-free conditions
For the characteristics of the ZR-ZT type oil-free compressor, the material and sealing design of the valve assembly can meet the gas flow requirements in an oil-free environment, avoiding valve core wear or seal failure due to insufficient lubrication.
Structural and performance features
High-pressure resistance design: The valve body is made of high-strength metal materials (such as cast iron or aluminum alloy), capable of withstanding the high-pressure working environment of the oil-free compressor (usually compatible with the pressure range of the ZR-ZT model's rated exhaust pressure).
High-precision sealing: The use of wear-resistant and aging-resistant sealing materials (such as nitrile rubber or fluororubber) ensures the sealing performance in frequent switching conditions, reducing gas leakage.
Quick response: The valve core has a sensitive action, capable of quickly responding to the signals of the control system, meeting the rapid switching requirements of compressor loading/unloading, and improving operational efficiency.
Original factory compatibility: As a dedicated spare part, the CD5-2 valve assembly's size, interface specifications are fully compatible with the air path system of the ZR-ZT type oil-free compressor, ensuring that after installation, it works in coordination with the entire machine's control system, avoiding compatibility issues.
