Air compressor is not a special equipment

Air compressors are usually not classified as special equipment because they are generally considered to be industrial equipment or mechanical equipment. Although air compressors may involve high pressure operations, they are generally not directly recognized as special equipment like pressure vessels, boilers, etc. However, it is worth noting that the oil and gas cylinder inside the air compressor belongs to special equipment when it meets a certain volume. In addition, the air storage tank used in connection with the air compressor may also be regarded as special equipment when the pressure exceeds a certain threshold and the volume and diameter meet certain standards.

In general:

air compressors themselves are usually not considered special equipment.

The oil and gas cylinder inside the air compressor (if the volume meets the special equipment standard) and the connected gas tank (if the pressure, volume and diameter meet the special equipment standard) may belong to the special equipment.

When using air compressors, relevant safety regulations and standards should be followed to ensure the normal operation of equipment and personnel safety. If you have more questions, it is recommended to consult the local special equipment regulatory body or professional.