Backflow Prevention Practice Exam

What is the primary function of a relief valve in a reduced pressure principle assembly?

1. Push the valve away from its seat

2. Push the valve on to its seat

3. Remain closed with any zone pressure

4. Remain open with any supply pressure

The correct answer is: Push the valve away from its seat

The primary function of a relief valve in a reduced pressure principle assembly is to manage the pressure within the system effectively. Specifically, the relief valve is designed to open when the pressure in the assembly exceeds a certain threshold, preventing potential backflow situations that could lead to contamination of the potable water supply. When the relief valve opens, it allows excess pressure to escape, which can effectively push the valve away from its seat. This action ensures that the pressure remains within safe limits, maintaining the integrity of the system and protecting the downstream water source from contamination. Thus, the relief valve plays a crucial role in the overall operation and safety of backflow prevention devices. Other options do not accurately describe the function of the relief valve. The option that suggests the valve pushes onto its seat does not reflect its role in relieving pressure, and the options indicating it remains closed or open with varying pressure conditions do not align with its essential function of pressure control.