On a dry barrel hydrant, where is the valve that controls water flow to all outlets located?

In a dry barrel hydrant, the valve that controls water flow to all outlets is located at the base of the hydrant. This design is crucial for preventing water from remaining in the hydrant and potentially freezing during cold weather, which could cause damage or impede functionality. The base configuration allows for proper drainage when the hydrant is not in use, ensuring that water does not sit in the hydrant's upper parts. This characteristic is a key aspect of how dry barrel hydrants operate, providing effective service in various climates while maintaining a safe and reliable water supply for firefighting operations. The location of the valve at the base is essential for this functional design.