Which feature allows isolating parts of the sprinkler system for maintenance without draining the entire system?

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Multiple Choice

Which feature allows isolating parts of the sprinkler system for maintenance without draining the entire system?

Explanation:
Isolating parts of a sprinkler system for maintenance without draining the whole system is accomplished with a control valve. Closing this valve blocks water flow into a specific section or zone, allowing work to be done there while the rest of the system stays pressurized. After shutting the valve, you can drain only the isolated section as needed, not the entire system. The other devices—waterflow alarm, tamper switch, and pressure gauge—serve monitoring, security, or measurement roles and do not provide a way to shut off flow to a portion of the system.

Isolating parts of a sprinkler system for maintenance without draining the whole system is accomplished with a control valve. Closing this valve blocks water flow into a specific section or zone, allowing work to be done there while the rest of the system stays pressurized. After shutting the valve, you can drain only the isolated section as needed, not the entire system. The other devices—waterflow alarm, tamper switch, and pressure gauge—serve monitoring, security, or measurement roles and do not provide a way to shut off flow to a portion of the system.

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