In an outside stem and yolk valve, how is the valve position indicated?

The indication of the valve position in an outside stem and yolk valve is clearly shown by the position of the stem. When the valve is closed, the stem will be in a down position, and when it is open, the stem will be raised. This design allows for a straightforward visual representation of whether the valve is in an open or closed state, making it easy for personnel to quickly assess the operational status of the valve from a distance.

The stem serves as a direct link between the handle and the valve mechanism, ensuring that the position of the stem directly corresponds to the valve's state. This visual cue is crucial in emergency scenarios or when rapid decision-making is required, as it reduces the likelihood of confusion that could arise from less direct indicators.