What color should the caps of each automatic sprinkler siamese connection be painted to indicate their function?

The color green is designated for the caps of automatic sprinkler siamese connections to indicate their specific function. This standard coloration is part of a broader coding system intended to improve safety and facilitate quick identification of fire safety equipment during emergencies. By painting the caps green, first responders can easily recognize that these connections are part of the automatic sprinkler system, which aids in efficient firefighting efforts. This visual cue is essential, especially in high-stress situations where time is critical, as it allows firefighters to quickly and accurately locate and utilize the necessary equipment.