In a pre-action system, a maximum of ______ sprinklers may be controlled by one deluge valve.

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Prepare for the Sprinkler Fitter Pro Test. Study with comprehensive resources, including flashcards and multiple-choice questions, each with detailed hints and explanations. Ensure your success on the exam!

Multiple Choice

In a pre-action system, a maximum of ______ sprinklers may be controlled by one deluge valve.

Explanation:
In a pre-action system, the deluge valve acts as the single control point that releases water into the piping network to all sprinklers that could open at once. The key idea is that one valve must be able to supply the total flow demanded by all heads in the zone when activated, which depends on pipe sizing, pressure, and water supply. Design practice typically assumes a single deluge valve can feed up to about 1000 sprinklers, given standard conditions. So 1000 is the best answer because it reflects the common design capacity for one deluge valve in such systems. Smaller figures like 500 or 750 are below typical capacity, while 2000 would usually require a larger valve or additional valves for proper operation.

In a pre-action system, the deluge valve acts as the single control point that releases water into the piping network to all sprinklers that could open at once. The key idea is that one valve must be able to supply the total flow demanded by all heads in the zone when activated, which depends on pipe sizing, pressure, and water supply. Design practice typically assumes a single deluge valve can feed up to about 1000 sprinklers, given standard conditions. So 1000 is the best answer because it reflects the common design capacity for one deluge valve in such systems. Smaller figures like 500 or 750 are below typical capacity, while 2000 would usually require a larger valve or additional valves for proper operation.

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