What is a key feature of an outside stem and yolk valve?

A key feature of an outside stem and yoke valve is its visible position indication. This design allows an operator to see the position of the valve (open or closed) from a distance without needing to take any extra steps.

The outside stem and yoke design has a stem that extends outside the valve body, and a yoke that supports it, allowing for easy visibility of the stem's position. When the valve is fully open, the stem is typically either fully retracted or at a specific position, indicating that water can flow freely. Conversely, when the valve is closed, the stem is extended, clearly signaling that the flow of water is halted. This feature is vital in emergency situations where immediate, clear visual cues are necessary for safety and efficiency.

Understanding this feature is essential, particularly in fire safety and sprinkler system applications, where operators need to quickly and accurately assess the status of various valves.