Which components are included in a Reduced Pressure (RP) assembly?

A Reduced Pressure (RP) assembly is designed to protect potable water supplies from contamination due to backflow. The correct answer includes two independently operating check valves, which serve to ensure that if one check valve were to fail, the second would still provide a barrier against backflow. This redundancy is crucial for maintaining the integrity of the water supply.

In addition to the check valves, the RP assembly contains a relief valve assembly. This relief valve plays a vital role by releasing any pressure buildup that may occur within the assembly, thereby preventing potential backflow conditions that could compromise water safety. The presence of four test cocks allows for regular testing and maintenance of the assembly, ensuring that all components are functioning correctly and effectively. Lastly, the two shut-off valves provide convenient access for maintenance and inspection, contributing to the overall reliability of the system.

The combination of these components is essential for the RP assembly to fulfill its purpose of preventing backflow and ensuring safe drinking water.