Cross Connection Practice Exam

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Study for the Cross Connection Exam. Prepare with interactive quizzes and multiple-choice questions, each complete with hints and detailed explanations. Get ready to excel in your certification!

Practice this question and more.

What component of a Pressure Vacuum Breaker assembly must be tested first?

The air inlet valve
The check valve
The relief valve
The shutoff valve

The correct answer is: The air inlet valve

In a Pressure Vacuum Breaker (PVB) assembly, the air inlet valve must be tested first because it plays a critical role in maintaining proper operation of the assembly. The air inlet valve is designed to open and allow air into the system when a negative pressure occurs, thereby preventing a potential back-siphonage of contaminated water into the potable water supply. Testing the air inlet valve first ensures that it can function properly and will open at the required negative pressure. If this valve fails to operate correctly, it compromises the overall effectiveness of the assembly in providing protection against cross-connections. Once the air inlet valve is verified to be functioning, the next components can then be appropriately tested in succession, ensuring comprehensive verification of the entire assembly's performance. This systematic approach is essential for maintaining safe drinking water standards and preventing contamination.