What minimum markings are required on a backflow prevention assembly?

The minimum markings required on a backflow prevention assembly are essential for identification and regulatory compliance. The correct choice includes the manufacturer's name, type of assembly, size, rated working pressure, and rated working temperature. These markings are crucial because they provide vital information needed for the proper selection, installation, and maintenance of the assembly.

The manufacturer's name ensures that users can trace the assembly back to the producer for any warranty claims or inquiries about specifications. Specifying the type of assembly and its size helps in identifying the appropriate application and ensuring compatibility with the system in which it is installed. The rated working pressure indicates the maximum pressure the assembly can safely handle without failure, which is critical for safe operation. Likewise, the rated working temperature helps to determine whether the assembly can withstand the thermal conditions of the environment in which it is used.

Understanding these required markings allows professionals to effectively assess backflow prevention assemblies in terms of compliance with local codes and standards, ensuring that they function correctly to protect against contamination in water systems.