According to NFPA 20, a refill valve shall be used for each water supply tank used for fire protection that is capable of being actuated by which means?

According to NFPA 20, a refill valve shall be used for each water supply tank used for fire protection that is capable of being actuated by which means?

• A. Manual
• B. Automatic
• C. Both
• D. Manual and automatic

Answer: (D)

NFPA 20 requires a refill valve on every water supply tank used for fire protection when the tank can be actuated by either manual or automatic means. The refill valve provides a path to restore the tank to its proper level after it has discharged, ensuring the system is ready for the next event no matter how the actuation occurred. If the tank could be triggered manually, automatically, or both, the refill valve must cover those scenarios so refilling is guaranteed. That’s why the correct understanding is that the refill valve is required for tanks capable of being actuated by both manual and automatic means.

NFPA 20 requires a refill valve on every water supply tank used for fire protection when the tank can be actuated by either manual or automatic means. The refill valve provides a path to restore the tank to its proper level after it has discharged, ensuring the system is ready for the next event no matter how the actuation occurred. If the tank could be triggered manually, automatically, or both, the refill valve must cover those scenarios so refilling is guaranteed. That’s why the correct understanding is that the refill valve is required for tanks capable of being actuated by both manual and automatic means.