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Control valves are valves that control flow to water-based fire protection systems. All main control valves and riser isolation valves must be kept in what position for normal operations?

Answer :

Final answer:

These valves, including ball valves, are designed to regulate flow and prevent backflow, ensuring system effectiveness.

Explanation:

In normal operations, all main control valves and riser isolation valves in water-based fire protection systems must be kept in the open position. This ensures uninterrupted flow and functionality of the system, allowing for immediate response in extinguishing fires. These valves, such as ball valves and other one-way control systems, are critical in regulating water flow and preventing backflow, thus maintaining the integrity and effectiveness of the fire protection system.

The design and operation principles of these valves ensure that water directed towards fire suppression can flow freely, but unwanted reverse flow is prevented, safeguarding against potential system failures or malfunctions. Additionally, aspects of water flow control highlighted, such as in the design of pressurized water reactors, emphasize the importance of precise flow regulation for safety and efficiency in various engineering applications, further underlining the critical role of these valves in operational settings.

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