If the air inlet of a pressure vacuum breaker fails to open and there is no backpressure through the #2 shut off valve, what is the correct action?

Enhance your skills for the Backflow Troubleshooting Test. Master backflow concepts with engaging multiple choice questions and explanations. Ace the exam with confidence!

In this scenario, if the air inlet of a pressure vacuum breaker fails to open, it indicates an issue that prevents the air from entering the system, which is critical for the proper operation of the backflow prevention device. The primary function of the air inlet is to allow air into the assembly when the system is subjected to negative pressure, thus preventing any siphoning effect.

Failing the air inlet suggests that it is not functioning correctly, which means the pressure vacuum breaker cannot adequately perform its role in preventing backflow. Testing the check valve, in this case, becomes crucial because if the check valve is failing, it could lead to potential backflow, exacerbating the issue at hand.

Conducting a test on the check valve after failing the air inlet allows for a comprehensive assessment of the system’s integrity. It ensures that both the air inlet and the check valve are evaluated for functionality before deciding on any further actions, such as replacing the assembly or making adjustments. Thus, this approach adheres to best practices in backflow prevention troubleshooting.