Which statement about pressure gauges is true?

Which statement about pressure gauges is true?

• A. Pressure gauges must be accessible and freeze-proof.
• B. Gauges must be installed in basement storage.
• C. Gauges are optional.
• D. Gauges must be located at the main supply.

Answer: (A)

Pressure gauges give a reliable way to monitor system pressure and confirm the sprinkler system is charged and operating within design limits. In NFPA 13R for low-rise residences, gauges must be accessible for reading, testing, and maintenance, and they must be freeze-proof to stay accurate in cold environments. If a gauge were locked away in a storage area or exposed to freezing temperatures, readings could be unreadable or misleading, compromising safety. The other statements aren’t correct because gauges aren’t merely optional equipment, and they don’t have to be placed only at the main supply; they should be placed where readings are practical to verify system performance and at accessible, protected locations.

Pressure gauges give a reliable way to monitor system pressure and confirm the sprinkler system is charged and operating within design limits. In NFPA 13R for low-rise residences, gauges must be accessible for reading, testing, and maintenance, and they must be freeze-proof to stay accurate in cold environments. If a gauge were locked away in a storage area or exposed to freezing temperatures, readings could be unreadable or misleading, compromising safety.

The other statements aren’t correct because gauges aren’t merely optional equipment, and they don’t have to be placed only at the main supply; they should be placed where readings are practical to verify system performance and at accessible, protected locations.