When conducting a field test on an air inlet valve of a pressure vacuum breaker, what should you do if the gauge reading does not drop after opening the high side bleed valve?

When conducting a field test on an air inlet valve of a pressure vacuum breaker, what should you do if the gauge reading does not drop after opening the high side bleed valve?

• A. Continue bleeding the high side
• B. Open another test cock
• C. Close the high side bleed valve and open the number 1 test cock
• D. Replace the high side bleed valve

Answer: (C)

When testing an air inlet valve of a pressure vacuum breaker, a gauge reading that does not drop after opening the high side bleed valve suggests that there could be an issue preventing proper drainage or pressure change in the system. Closing the high side bleed valve and opening the number 1 test cock is the appropriate action in this scenario because it allows for a more thorough examination of the system. By closing the bleed valve, you can isolate the high side and avoid inadvertently introducing additional pressure or complications. Opening the number 1 test cock allows for the release of any trapped air or liquid and provides an alternative measurement point to assess the status of the system. This action helps to determine whether the issue lies with the air inlet valve, the gauge, or other components of the assembly. Through this procedure, it's possible to gather further diagnostic information that can guide appropriate troubleshooting steps.

When testing an air inlet valve of a pressure vacuum breaker, a gauge reading that does not drop after opening the high side bleed valve suggests that there could be an issue preventing proper drainage or pressure change in the system. Closing the high side bleed valve and opening the number 1 test cock is the appropriate action in this scenario because it allows for a more thorough examination of the system.

By closing the bleed valve, you can isolate the high side and avoid inadvertently introducing additional pressure or complications. Opening the number 1 test cock allows for the release of any trapped air or liquid and provides an alternative measurement point to assess the status of the system. This action helps to determine whether the issue lies with the air inlet valve, the gauge, or other components of the assembly. Through this procedure, it's possible to gather further diagnostic information that can guide appropriate troubleshooting steps.