Cross Connection Practice Exam

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What is a sign that the Double Check Valve Assembly requires attention?

Test cock leakage
Consistent high pressure
Unusual vibration during operation
Visible rust on shutoff valves

The correct answer is: Test cock leakage

A sign that the Double Check Valve Assembly requires attention is test cock leakage. Test cocks are small fittings on the assembly that allow for pressure testing of the system. If there is leakage from the test cocks, it indicates that the internal sealing elements of the valve may be compromised. This can lead to potential backflow issues, which is why any leakage should be addressed promptly. While consistent high pressure, unusual vibration during operation, and visible rust on shutoff valves can be indicators of potential issues within a plumbing system, they do not specifically point to a problem with the Double Check Valve Assembly as clearly as test cock leakage does. Test cock leakage directly affects the valve's ability to prevent backflow, making it an essential sign to monitor for maintenance or repairs.