Final answer:
Low pressure ammonia piping is labeled with a yellow color band, helping distinguish its contents and pressure level for safety and maintenance.
Step-by-step explanation:
Low pressure ammonia piping is typically identified by a yellow color band. This color coding helps with safety and maintenance by providing a clear visual indicator of the contents and the pressure level of the piping. According to the ANSI/ASME A13.1 standard for the identification of pipes, yellow is the industry-recognized color for gases that are flammable and oxidizing, which includes ammonia.