R-22 refrigerant cylinders are identified by which color?

R-22 refrigerant cylinders are identified by the color green. This color coding is standardized for identifying refrigerants and helps ensure safe handling and use. Using specific colors for different refrigerants reduces the risk of mixing them up, which could lead to hazardous situations or inefficient system performance.

In the case of R-22, the green color signifies that it is a specific type of refrigerant, which is crucial for technicians working in the field as they handle various refrigerants. Proper identification is essential for maintaining safety standards and ensuring that the correct refrigerant is used in specific refrigeration systems.