What color are valve caps for hydrants?

The color of valve caps for hydrants is consistently blue. This standard coloring helps in effectively identifying the type of hydrant and its capacity. Blue valve caps indicate that the hydrant flows at a high rate, which is vital information for firefighters and emergency services. This color coding system is used to ensure that different hydrants can be quickly assessed based on their capabilities, improving response times during emergencies.

In contrast, other colors like red, green, and yellow are typically used to signify different flow rates or other characteristics of hydrants, but they do not represent the standard valve cap color. Understanding this coding system is crucial for those working in water service and emergency response, as it enhances safety and operational efficiency.