During the field test of the second check valve of a reduced pressure principle assembly, what should be done if high side pressure is applied and the gauge reading increases?

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

When conducting the field test of a reduced pressure principle assembly, observing the behavior of the second check valve is crucial for determining its functionality. If high side pressure is applied and the gauge reading increases, it indicates that water is moving backward through the system, which may suggest a potential issue with the second check valve not functioning correctly.

Closing the #2 test cock is the appropriate action to take in this scenario. By closing the test cock, you isolate the second check valve from the high pressure that is causing the gauge reading to rise. This step is critical because it helps pinpoint where the problem may lie—whether it is with the check valve itself or due to backflow from the system.

In this situation, opening the #2 test cock would allow more water (and pressure) to enter the system, which could further complicate the testing process and mask any underlying issues. Observing the gauge reading alone does not provide the necessary action to rectify the situation. Opening the bleed valve would not be appropriate as it might introduce air into the system or result in water loss, potentially affecting the test results.

In summary, closing the #2 test cock is essential to maintain control over the testing process and to ensure accurate measurement and evaluation of the second check valve's