In NFPA 13, what are "control valves" used for?

Control valves are a critical component in a sprinkler system as outlined in NFPA 13. Their primary function is to manage the flow of water within the system effectively. This includes controlling the water supply to different areas of the system, turning the water flow on or off as needed, and allowing for maintenance or repairs without shutting down the entire system.

In a fire situation, control valves also serve to direct water to specific sprinkler zones, ensuring that the appropriate areas receive the necessary water pressure and volume for effective fire suppression. Therefore, their role is essential not only for operational efficiency but also for safety in managing how the sprinkler system responds during an emergency. Understanding the function and importance of control valves is crucial for anyone involved in the design, installation, or maintenance of sprinkler systems as per NFPA 13 guidelines.