The automatic shutdown pressure value of the air compressor is not static, but is carefully set according to the specific model and use scenario of the air compressor. The following is a summary of the shutdown pressure value of the air compressor under different conditions:
1. General
- ordinary air compressor: Its working pressure range is usually between 0.7Mpa and 0.8Mpa, that is, 7 to 8Bar. In the process of pressurization, you need to always pay attention to the pointer on the pressure gauge to ensure that the pressure reaches the standard, while avoiding excessive pressure.
- Low pressure air compressor: Mainly used for light applications, such as inflatable toys, inflators and other small equipment, its working pressure is usually between 0.4 Mpa and 0.8 Mpa, that is, 4 to 8Bar.
- Medium pressure air compressor: It is commonly used in printing and packaging equipment, pharmaceutical and food industries, automobile maintenance and painting, etc. Its working pressure range is usually between 1.6 Mpa and 4.0 Mpa, that is, 16 to 40Bar.
- High pressure air compressor: Commonly used in the oil and gas industry, chemical industry and aerospace, etc., its working pressure is usually between 4.0 Mpa and 40.0 Mpa, that is, 40 to 400Bar.
2. specific setting value
- screw air compressor: The upper pressure limit is usually between 6 and 10Bar. If you try to let the air compressor exceed this limit, it may cause a safety accident.
- Normal stop working pressure it is usually 9.5bar. However, please note that this value is not absolute, and the actual setting may vary according to the model and application scenario of the air compressor.
3. safety considerations
- maximum allowable working pressure the maximum allowable working pressure of the air compressor should not exceed 1.25 times of its rated working pressure. For example, an air compressor with a rated working pressure of 0.8MPa has a maximum allowable working pressure of 1.0MPa.
4. start and stop pressure difference
- start and stop pressure difference: In order to ensure the stable operation of the air compressor and prolong the service life, a start and stop pressure difference is usually set. For example, the normal start-up working pressure of the air compressor may be 8.4bar, while the normal stop working pressure is 9.5bar. This design can avoid frequent start and stop of air compressor, reduce mechanical wear and energy consumption.
In summary, the shutdown pressure value of the air compressor is a relatively flexible parameter that needs to be set according to the specific situation. In practical applications, it is recommended to refer to the instruction manual of the air compressor or consult the manufacturer to obtain the most accurate shutdown pressure setting value. At the same time, in order to ensure the safe operation of the air compressor and prolong the service life, the air compressor should be maintained and maintained regularly.
