What must always be checked on a diverter valve to ensure proper flow?

In the context of diverter valves, ensuring proper flow often involves checking the indicator. The indicator serves as a visual confirmation that the valve is in the correct position for directing the fluid flow as intended. This is crucial because if the valve is not properly aligned, it can lead to misrouting of the flow, which might cause system inefficiencies or malfunctions.

An indicator is specifically designed to show whether the diverter valve is open or closed and to which direction the fluid will flow, making it an essential component for operators to monitor regularly. Without checking the indicator, there might be a risk of overlooking a critical aspect of the system operation, which could lead to potential operational issues.

While the seal, pressure gauge, and flow meter are also important components in various contexts — seals prevent leaks, pressure gauges monitor system health, and flow meters measure the amount of flow — they do not primarily serve the purpose of indicating the valve position. Therefore, focusing on the indicator ensures that flow is properly directed, which aligns with the fundamental operational requirements for a diverter valve.