Backflow Prevention Practice Exam

A typical field test of a reduced pressure assembly checks what primarily?

1. Water temperature

2. Flow rate

3. Integrity of the check valve

4. Pressure differential

The correct answer is: Integrity of the check valve

The primary focus of a typical field test of a reduced pressure assembly is to assess the integrity of the check valve. This is crucial because the function of the check valve is to prevent backflow, which is the unwanted reverse flow of water that can carry contaminants into the potable water supply. During the test, the check valves are evaluated for their ability to seal properly and maintain a specific pressure differential, ensuring they are effectively blocking any reverse flow when needed. Identifying any faults in the check valve is essential for maintaining safe drinking water quality, as even a small malfunction can lead to significant risks of contamination. When the check valves are functioning correctly, they will hold against the back pressure and ensure that the water flow is maintained in the intended direction. The other aspects such as water temperature, flow rate, and pressure differential might be monitored or considered during maintenance or operation but are not the primary focus of the field test specifically designed for reduced pressure assemblies. The check valve's performance directly correlates with the assembly's overall effectiveness in preventing backflow, hence its central importance in this context.