Cross Connection Practice Exam

When repairing a Double Check Valve Assembly, what action should the tester avoid?

1. Inspecting the internal components

2. Replacing worn components with new parts

3. Modify internal components

4. Cleaning components as necessary

The correct answer is: Modify internal components

When repairing a Double Check Valve Assembly, modifying internal components should be avoided because doing so can compromise the integrity and intended functionality of the valve. These valves are designed to operate within specific parameters and tolerances outlined by the manufacturer. Altering any internal components can interfere with the performance and reliability of the valve, potentially leading to leaks or failures that defeat the purpose of having the assembly in the first place -- which is to prevent backflow and protect the water supply. Maintaining the original specifications is crucial in valve repair, as this ensures compliance with regulatory standards and assures proper operation. Instead, the focus should be on inspecting, replacing worn components with suitable new parts, and cleaning as necessary to restore the assembly to its optimal function, all of which contribute to the overall effectiveness and safety of the system.