When valves are periodically disassembled for service, which of the following is not required?

When valves are periodically disassembled for service, which of the following is not required?

• A. The wedge guides should be replaced
• B. The wedge guides should be welded and remachined
• C. All sealing surfaces should be inspected
• D. Threaded connections should be checked for wear

Answer: (B)

The correct choice indicates that welding and remachining the wedge guides is not a requirement during the periodic disassembly of valves for service. In standard valve maintenance practices, it is common to inspect and potentially replace parts to ensure optimal functioning. The precedence usually is on replacing worn components like wedge guides to maintain effective sealing and operation. By contrast, welding and remachining are typically more invasive actions associated with significant wear or damage that would require the guides to be refurbished rather than simply replaced. This action is not standard unless there is explicit evidence of severe degradation that necessitates such extensive repair work, which is less common in regular maintenance. The routine requirements, such as inspecting all sealing surfaces and checking threaded connections for wear, are essential to ensure the integrity and functionality of the valve. Therefore, the avoidance of the extensive process of welding and remachining in most disassembly scenarios supports the selection of this answer.

The correct choice indicates that welding and remachining the wedge guides is not a requirement during the periodic disassembly of valves for service. In standard valve maintenance practices, it is common to inspect and potentially replace parts to ensure optimal functioning. The precedence usually is on replacing worn components like wedge guides to maintain effective sealing and operation.

By contrast, welding and remachining are typically more invasive actions associated with significant wear or damage that would require the guides to be refurbished rather than simply replaced. This action is not standard unless there is explicit evidence of severe degradation that necessitates such extensive repair work, which is less common in regular maintenance.

The routine requirements, such as inspecting all sealing surfaces and checking threaded connections for wear, are essential to ensure the integrity and functionality of the valve. Therefore, the avoidance of the extensive process of welding and remachining in most disassembly scenarios supports the selection of this answer.