A class B hydrant has a flow rate of how many gallons per minute?

Answer: B — 500 to 999

A class B hydrant is characterized by a flow rate that falls within the range of 500 to 999 gallons per minute (GPM). This classification is important for fire departments to understand because it helps them assess the availability and adequacy of water supply during emergency situations. Understanding these classifications allows firefighters to make informed decisions about which hydrants to use based on the required water flow for different types of fires and operations. When facing a fire that may need a high flow rate, knowing that a class B hydrant delivers substantial flow helps ensure that the firefighting efforts can be executed effectively. Thus, the designation of a hydrant as class B directly corresponds to its specified flow rate, which falls squarely within the range of 500 to 999 GPM.