I. Core Functions and Working Characteristics of Atlas Copco
Precise Temperature Control
This valve uses an internal temperature sensor (such as a wax valve core) to monitor the temperature of the medium (usually lubricating oil or coolant). When the temperature reaches 55℃, it automatically opens the cooling path; when it is below this temperature, it closes or reduces the cooling flow to ensure that the system temperature remains within the range of approximately 55℃.
It is suitable for scenarios that are sensitive to temperature (such as certain low-load operating conditions, special industry gas requirements, or auxiliary cooling systems), avoiding the deterioration of oil quality or the decline in compressed air quality due to excessively high temperatures. Protection mechanism
Compared to conventional temperature control valves (usually set at 70-95℃), the 55℃ temperature control valve can start cooling earlier, and is suitable for special models or modified systems that require low-temperature operation to prevent component aging due to local overheating.
II. Application Scenarios and Model Matching
Applicable models: Commonly seen in small and medium-sized air compressors or specific customized models (such as some G series and GA series low-power models), or used in the auxiliary cooling circuits of air compressors (such as pre-cooling of post-treatment equipment).
Model identification: The original Atlas Copco 55℃ temperature control valve has specific spare parts numbers (such as those in the 3112 series, specific details need to be confirmed based on the complete model of the air compressor), and it is necessary to distinguish it from conventional temperature setting control valves.
When replacing, it is necessary to confirm the interface size, installation method, and medium flow direction of the valve to ensure compatibility with the original system.
III. Common Faults and Troubleshooting
Valve Stuck
Symptoms: Unable to open when the temperature reaches 55℃ (resulting in continuous temperature increase), or unable to close when the temperature is below 55℃ (excessive cooling).
Reasons: Accumulation of oil and impurities or aging of the temperature sensing element. Clean the valve core after disassembly and repair if ineffective; replace the valve if necessary.
Temperature Response Deviation
The actual opening temperature is too far from 55℃ (such as 60℃ to open), which may indicate failure of the temperature sensing element. Replace the valve.
Leakage
Damage to the valve body or sealing components causing medium leakage, affecting cooling efficiency. Replace the sealing components or the entire valve.
IV. Replacement and Maintenance Tips
Replacement Timing
When the system temperature continuously deviates from the 55℃ range and it is confirmed that it is a fault of the temperature control valve;
When the valve has leakage, stuck, or other unreparable faults;
Replace it when following the recommended preventive maintenance cycle of the equipment manual (usually synchronized with major overhauls).
Installation Precautions
Select the original 55℃ dedicated temperature control valve to ensure the accurate temperature setting value;
Clean the pipe interface before installation, remove residual impurities;
Pay attention to the medium flow direction (the valve body usually has arrow markings), do not install it in reverse;
After replacement, start the equipment, monitor the temperature changes, and confirm that the valve can operate normally at around 55℃. Daily maintenance
Regularly check for any leakage traces around the valves;
In conjunction with the oil replacement process, clean the oil passages near the temperature control valve to remove impurities and prevent sticking.
