Valves installed in foam systems designed for automatic operation shall be what?

Valves installed in foam systems designed for automatic operation shall be what?

• A. Automatic only
• B. Manual and Unsupervised
• C. Open and manual
• D. Supervised electrically, Locked, and Sealed

Answer: (D)

Valves in automatic foam systems must be protected and monitored to ensure reliable deployment. Electrically supervised means the control system continually verifies the valve’s position and that power and signaling are functioning; if the valve doesn’t respond or power is lost, an alarm or fault condition is generated. Locking prevents unauthorized or accidental manual changes that could undermine automatic operation, while sealing provides tamper evidence and helps keep the mechanism protected from interference. This combination ensures the valve will operate as intended in an automatic release, and any tampering or faults will be detected promptly. Other options don’t provide the necessary monitoring, protection, and integrity required for automatic systems.

Valves in automatic foam systems must be protected and monitored to ensure reliable deployment. Electrically supervised means the control system continually verifies the valve’s position and that power and signaling are functioning; if the valve doesn’t respond or power is lost, an alarm or fault condition is generated. Locking prevents unauthorized or accidental manual changes that could undermine automatic operation, while sealing provides tamper evidence and helps keep the mechanism protected from interference. This combination ensures the valve will operate as intended in an automatic release, and any tampering or faults will be detected promptly. Other options don’t provide the necessary monitoring, protection, and integrity required for automatic systems.